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Self diagnosis
Fault table
Notes:
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◆ The fault table is listed according to the 5 digit fault code on the left.
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◆ Explanation of the fault types (e.g. "open circuit/short circuit to earth"):
=> Fault reader operating instructions
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◆ Before renewing components indicated as being faulty, check the wiring and connectors to these components as well as the earth connections using current flow diagram. This is particularly relevant if faults are output as "occurring sporadically" (SP).
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Output on V.A.G 1551 printer
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Possible causes of fault
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Possible effects
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Fault remedy
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00282
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Throttle valve positioner -V60-1)
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Short circuit
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- Wiring open circuit or short to earth/positive
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- Cold starting problems
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- Check V60
, checking throttle valve control part
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- V60 defective/sticking
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- Cold idling problems
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Open circuit
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- Wiring open circuit
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- Hard load change
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- V60 defective/sticking
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- Mechanical emergency running (J338) recognized
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Mechanical fault
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- V60 defective/sticking
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Connectors
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- Cables interchanged
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1)
The throttle valve positioner V60 is a component of the throttle valve control part J338.
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00513
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Engine speed sender -G28
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Signal outside tolerance
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- Gap speed sender/sender wheel too large
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- Engine will not start
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- Check G28 for tight fit/metal particles
, item 22
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- Metal particles on G28 or retaining base loose
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- Check sender wheel for tight fit:
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- Sender wheel loose
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=> Repair group 13; Dismantling and assembling cylinder block, crankshaft and flywheel
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- Wiring open circuit or short circuit
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- Check G28=> Page 24-81
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- Loose contact
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- G28 defective
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- Replace G28
=> Page 24-13
, item 22
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00515
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Hall sender -G40
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Signal outside tolerance
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- G40 defective
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- Governed speed approx. 5000 rpm
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- Check G40
=> Page 28-16
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- Wiring open circuit
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- Reduced performance
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- Wire has short to positive
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- Poor starting
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- Wire has short to earth
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- High fuel consumption
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- Loose contact
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- TDC marking not aligned at distributor
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- Check distributor setting => Page 28-7
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- Distributor loose / turned
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00516
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Idling switch -F601)
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implausible signal
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- F60 defective
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- Engine running problems when pulling away
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- Check F60
, checking throttle valve control part
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Open circuit
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- Wiring open circuit
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- Engine running problems during transfer from idling/overrun to part load
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Short to earth
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- Short to earth
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- Short to positive
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1)
The idling switch F60 is a component of the throttle valve control part J338.
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00518
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Throttle valve potentiometer -G691)
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- G69 defective
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Short to earth
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- Wiring open circuit
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- Hard load change
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- Check G69
, checking throttle valve control part
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- Wire has short to earth
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Open circuit/short to positive
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- Wiring open circuit in earth wire
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- Wire has short to positive
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- G69 defective
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implausible signal
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- Loose contact
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- G69 defective
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1)
The throttle valve potentiometer G69 is a component of the throttle valve control part J338.
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Output on V.A.G 1551 printer
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Possible causes of fault
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Possible effects
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Fault remedy
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00520
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Air mass/flow meter -G70/G19
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Open circuit/short to positive
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- Wiring open circuit or short to positive
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- Engine running problems
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- Check G70
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- G70 defective
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Open circuit/short to earth
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- Wiring open circuit or short to earth
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- G70 defective
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00522
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Coolant temperature sender -G62
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Short to earth
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- Wire has short to earth
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- Poor cold starting
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- Check G62
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- G62 defective
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- Poor hot starting
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Open circuit/short to positive
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- Wiring open circuit
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- Wire has short to positive
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- G62 defective
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implausible signal
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- G62 defective
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Output on V.A.G 1551 printer
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Possible causes of fault
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Possible effects
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Fault remedy
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00523
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Intake air temperature sender -G42
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Short to earth
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- Wire has short to earth
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- Poor hot starting
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- Check G42
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- G42 defective
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Open circuit/short to positive
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- Wiring open circuit or short to positive
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- G42 defective
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00524
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Knock sensor 1 -G61
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no signal
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- Wiring open circuit or short to earth
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- Reduced performance
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- Check G61
=> Page 28-18
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- No knock recognition from Simos control unit (J361)
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- High fuel consumption
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- G61 defective
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- Replace G61 => Page 28-3
, item 10
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signal too large
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- No knock recognition from Simos control unit (J361)
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- If necessary replace J361,
=> Page 24-10
, item 4
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- G61 defective
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- Replace G61 => Page 28-3
, item 10
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00525
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Lambda probe -G39
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no signal
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- Wiring open circuit or short to positive
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- No Lambda control
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- Check Lambda probe and Lambda control
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- G39 defective
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- Fuel smell
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Open circuit/short to earth
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- Wiring open circuit or short to earth
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- G39 defective
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Short to positive
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- Wiring open circuit or short to positive
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- G39 defective
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signal too small
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- Lambda probe heating defective
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- Check Lambda probe heating=> Page 24-46
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implausible signal
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- G39 defective
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00530
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Throttle valve positioner/potentiometer -G881)
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Open circuit/short to earth
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- Wiring open circuit or short to earth
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- Cold starting problems
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- Check G88
, checking throttle valve control part
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- G88 defective
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- Cold idling problems
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Open circuit/short to positive
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- Wiring open circuit in earth wire
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- Hard load change
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- G88 defective
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- Rough idling
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- Wire has short to positive
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- Reduced performance
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implausible signal
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- Connector incorrectly wired
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Control difference
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- G88 defective
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Control limit exceeded
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- G42 defective / loose contact
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- Check G42
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1)
The throttle valve positioner/potentiometer G88 is a component of the throttle valve control part J338.
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00532
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Supply voltage
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Signal too large
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- Battery voltage
- exceeds 23.9 V
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- Engine running problems
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- Check alternator:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Signal too small
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- Battery voltage
- less than 6.3 V
- Poor earth connection
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- Check battery
Check earth connections
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00533
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Idling control
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Lower limit value
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- Throttle valve positioner (V60) sticking
- Unmetered air to throttle valve
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- Engine running problems
- High fuel consumption
- Fuel odours
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- Check V60
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- Injector defective
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- Check N30...N33
=> Page 24-96
, Checking injectors
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Upper limit value
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- Throttle valve positioner (V60) sticking
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- Air filter blocked
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- Check air filter, renew if necessary
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00537
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Lambda control
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upper limit value
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- Short to earth
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- No Lambda control
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- Check Lambda probe and Lambda control
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- Injector defective (blocked)
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- Engine running problems
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- Check N30...N33
=> Page 24-96
, Checking injectors
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- Fuel pressure regulator defective
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- Check fuel pressure regulator => Page 24-102
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- Fuel pump defective
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- Check fuel pump => Repair group 20
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- Fuel tank empty
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- Check fuel in fuel tank
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lower limit value
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- see next page
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00537
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Lambda control continued
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Lower limit value
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- Activated charcoal filter solenoid valve 1 (N80) leaking/sticking
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- Check N80 => Page 01-39
, Final control diagnosis
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- Injector defective (not closing completely)
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- Check N30...N33
=> Page 24-96
, Checking injectors
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- Fuel pressure regulator defective
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- Check fuel pressure regulator => Page 24-102
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00545
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Engine/gearbox electrical connection
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Short to earth
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- Fault in automatic gearbox
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- Hard gear changes
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- Check wiring to gearbox:
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- Wiring open circuit or short to earth
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=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Signal outside tolerance
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- G40 defective
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- Speed limitation at approx. 5000 rpm
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=> Automatic gearbox 096; Self-diagnosis, Interrogating fault memory
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Short to positive
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- Wiring open circuit or short to positive
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00546
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Data wire defective
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Short to positive
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- Short to positive
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- No effects
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- Check wire from control unit to diagnostic connector according to current flow diagram:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Output on V.A.G 1551 printer
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Possible causes of fault
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Possible effects
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Fault remedy
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00624
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Air conditioner compressor cut-in
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Short to positive
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- Wiring open circuit or short to positive
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- Hard load changes at small throttle valve angles
- Rough idling
- Idling speed drops when switching air conditioner on
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- Check air conditioner relay:
Check wiring to air conditioner:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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00625
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Speed signal
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Signal outside tolerance
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- No signal from speedometer (G21) or speedometer sender (G22)
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- Speedometer not indicating correctly
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- Check signal from G21/G22
, checking speed signal
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- Increased idling speed
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- Engine running problems
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Output on V.A.G 1551 printer
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Possible causes of fault
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Possible effects
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Fault remedy
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00635
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Lambda probe heating before Catalyst
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Open circuit/short to positive
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- Wiring open circuit/short to positive
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- Fuel smell
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- Check Lambda probe heating
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- G39 defective
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- Check wiring for short to positive/earth:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Short to earth
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- Short to earth
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- G39 defective
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V.A.G 1551 print-out
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Possible causes of fault
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Possible effects
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Fault remedy
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00638
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Engine/gearbox electrical connection 2
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Short to earth
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- Fault in automatic gearbox
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- Hard gear changes
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- Check wiring to gearbox:
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- Wiring open circuit or short to earth
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=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Signal outside tolerance
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- G40 defective
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- Speed limitation at approx. 5000 rpm
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=> Automatic gearbox 096; Self-diagnosis, Interrogating fault memory
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Short to positive
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- Wiring open circuit or short to positive
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Output on V.A.G 1551 printer
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Possible causes of fault
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Possible effects
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Fault remedy
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01243
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Intake manifold change-over valve -N1561)
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Open/short circuit to earth
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- Wire open/short circuit to earth
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- Hard governor control caused by switching injectors off at approx. 6500 rpm
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- Check activation
=> Page 01-39
, Final control diagnosis
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- N156 defective
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- Acceleration problems
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Short to positive
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- Short to positive
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- N156 defective
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1)
Only engine code AFT
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Output on V.A.G 1551 printer
|
Possible causes of fault
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Possible effects
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Fault remedy
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01247
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Activated charcoal filter solenoid valve 1 -N80
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Signal to positive
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- Wiring has short to positive
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- Rough idling
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- Check N80 => Page 01-39
, final control diagnosis
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- N80 defective
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- Fuel smell
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Open circuit/short to positive
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- Wiring open circuit/short to positive
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- N80 defective
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V.A.G 1551 print-out
|
Possible causes of fault
|
Possible effects
|
Fault remedy
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01249
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No.1 cyl. injector -N30
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Open circuit/short to positive
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- Wiring open circuit or short to positive
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- Poor starting
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- Check N30...N33 => Page 24-96
, checking injectors
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- N30 defective
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- Poor performance
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Short to earth
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- Short to earth
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- Engine will not start
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- N30 defective
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01250
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No. 2 cyl. injector -N31
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Open circuit/short to positive
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=> No. 1 Cyl., fault code 01249
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=> No. 1 Cyl., fault code 01249
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=> No. 1 Cyl., fault code 01249
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Short to earth
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Output on V.A.G 1551 printer
|
Possible causes of fault
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Possible effects
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Fault remedy
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01251
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No. 3 cyl. injector -N32
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Open circuit/short to positive
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=> No. 1 Cyl., fault code 01249
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=> No. 1 Cyl., fault code 01249
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=> No. 1 Cyl., fault code 01249
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Short to earth
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01252
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No. 4 cyl. injector -N33
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Open circuit/short to positive
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=> No. 1 Cyl., fault code 01249
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=> No. 1 Cyl., fault code 01249
|
=> No. 1 Cyl., fault code 01249
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Short to earth
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Output on V.A.G 1551 printer
|
Possible causes of fault
|
Possible effects
|
Fault remedy
|
|
01259
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Fuel pump relay -J17
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Short to positive
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- Short to positive
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- Engine will not start
|
- Check J17 => Page 01-39
, final control diagnosis
|
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|---|
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Output on V.A.G 1551 printer
|
Possible causes of fault
|
Possible effects
|
Fault remedy
|
|
17978
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Engine control unit blocked
|
- Attempted manipulation
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- Engine will not start
|
- Match engine electronic control unit to the electronic immobilizer => Page 24-91
|
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- Short in the communication wire
|
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- Check electronic immobilizer:
=> Repair group 96; Servicing electronic immobilizer
|
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- Incorrect coding
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- Immobilizer control unit defective/missing
|
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Output on V.A.G 1551 printer
|
Possible causes of fault
|
Possible effects
|
Fault remedy
|
|
65535
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Control unit defective
|
- Control unit internally defective
|
- Engine running problems
|
- Renew J361 if necessary,
=> Page 24-10
, item 4
|
|
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defective
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- Engine will not start
|
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<SOURCEMARKET>
</SOURCEMARKET>
<SOURCESYSTEM>
</SOURCESYSTEM>
|
