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Fault table, fault codes 00263...00524
Fault table, fault codes 00263...00524
Notes:
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◆ The fault tables are 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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◆ If components are indicated as faulty:
First check the wiring and connectors to these components as well as the system earth connections according to current flow diagram. This is particularly relevant if faults are output as "occurring sporadically" (SP).
V.A.G 1551 print out, e.g.:
00523 030
Intake air temperature sender -G42
Short to earth
Sporadically occurring fault
Explanation:
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◆ 00523 = Fault code
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◆ 030 = Fault type as number
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◆ Intake air temperature sender -G42 = Faulty current path or incorrect location
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◆ Short to earth = Fault type as text
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◆ Sporadic faults = Faults that are not always present e.g. loose contact
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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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00281
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Road speed sender -G68
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Implausible signal
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- No signal from speedometer (G21) or speedometer sender (G22)
- Wiring open circuit
- Loose contact or corrosion due to moisture in connector
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- Speedometer not functioning
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- Check speed signal
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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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00282
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Throttle valve positioner -V601)
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Short to earth
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- Wiring short to earth
- -V60 defective/sticking in closed position
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- Cold starting problems
- Cold idling problems
- Load change jolt when decelerating
- Mechanical emergency running
- Idling problems
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- Check V60
, Checking throttle valve control part
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Short to positive
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- Wiring short to positive
- -V60 defective/sticking in open position
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Output open
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- Wiring open circuit
- -V60 defective
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- Engine control unit signal output defective (engine control unit defective)
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- Replace engine control unit
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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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00305
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Fuel consumption indicator signal
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Short to positive
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- Short to positive in wiring between engine control unit and on-board computer
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- No fuel consumption indicator in on-board computer
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Check signal for fuel consumption indicator
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Short to earth
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- Short to earth in wiring between engine control unit and on-board computer
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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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No signal
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- Signal wire has an open circuit or short to earth or short to positive
- Earth wire has open circuit or short to positive
- Open circuit in the screening from -G28
- -G28 defective
- Metal particles on engine speed sender -G28
- Gap between -G28/sender wheel too large
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- The engine revs only to a speed of approx. 4500 rpm)
- Reduced performance
- When cold the engine will not start or is difficult to start (cold starting problems)
- The engine will not start when hot or is difficult to start (hot starting problems)
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- Check G28
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Continued on 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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00513
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Engine speed sender -G28
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No signal
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- Sender wheel loose
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- Engine misfiring
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- Check sender wheel:
=> Repair group 13; Removing and installing cylinder block, sealing flange and flywheel/drive plate
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- Engine control unit signal output defective (engine control unit defective)
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- Replace engine control unit
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Notes on fault code 00513:
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◆ Metal particles can cause additional signals to be generated.
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◆ Signals may not be generated or be too small and therefore not recognised if the sender gap to sender wheel is too large or the sender wheel is damaged.
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◆ The signals can be irregular if the sender wheel is loose.
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◆ Interference signals can cause additional signals to be recognised.
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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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Open circuit/short to positive
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- Wiring open circuit or short to positive
- -G40 defective
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- Engine has no power at full throttle
- Emission values not OK
- Higher fuel consumption
- Engine does not start or is difficult to start when cold (cold starting problems)
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- Check G40
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Short to earth
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- Short to earth
- -G40 defective
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Implausible signal
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- Loose contact or corrosion due to moisture in connector
- -G40 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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00516
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Idling switch -F601)
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Implausible signal
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- Loose contact or corrosion due to moisture in connector
- F60 defective
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- Idling problems
- Engine running problems when driving off
- Load change jolt when decelerating
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- Adapt engine control unit to the throttle valve control part
, checking throttle valve control part
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- Throttle valve sticking
- Accelerator cable adjustment
- Floor mat pressing on accelerator pedal
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- Check accelerator cable adjustment:
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- Engine control unit input signal defective (engine control unit defective)
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- Replace engine control unit
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1)
The idling speed 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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Short to earth
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- Wiring short to earth
- -G69 defective
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- Slight misfiring when accelerating
- Load change jolt when decelerating
- Increased emission values
- No full throttle recognition
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- Adapt engine control unit to throttle valve control part
, checking throttle valve control part
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Open circuit/short to positive
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- Wiring open circuit or short to positive
- -G69 defective
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Continued on next page
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2)
The throttle valve potentiometer (G69) 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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Continued
Throttle valve potentiometer -G691)
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No signal
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- Signal wire has open circuit or short to earth or short to positive
- Earth wire has open circuit or short to positive
- -G69 defective
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- Slight misfiring when accelerating
- Load change jolt when decelerating
- Increased emission values
- No full throttle recognition
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- Adapt engine control unit to throttle valve control part
, checking throttle valve control part
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2)
The throttle valve potentiometer (G69) 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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00519
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Intake manifold pressure sender -G71
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Short to positive
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- Wiring short to positive
- -G71 defective
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- Increased emission values
- Load change jolt when decelerating
- Hard load change
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- Check G71
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Open circuit/short to earth
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- Wiring open or short circuit to earth
- -G71 defective
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Implausible signal
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- Loose contact or corrosion due to moisture in connector
- -G71 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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- Wiring short to earth
- -G62 defective
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- Poor cold starting
- Poor hot starting
- No idling speed adaption
- Increased emission values
- Increased fuel consumption
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- Check G62
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Open circuit/short to positive
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- Wiring open circuit or short to positive
- -G62 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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00523
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Intake air temperature sender -G42
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Short to earth
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- Wiring short to earth
- -G42 defective
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- Poor hot starting
- Increased emission values
- Poor acceleration when cold and during warm-up phase, progression problems
- Rough idling or no idling when cold or during the warm-up phase
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- Check G42
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Open circuit/short to positive
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- Wiring open circuit or short to positive
- -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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Short to earth
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- Wiring short to earth
- -G61 defective
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- Reduced power
- Increased fuel consumption
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- Check G61
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Short to positive
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- Wiring short to positive
- -G61 defective
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Open circuit
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- Wiring open circuit
- -G61 defective
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Signal too small
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- Wiring open circuit or short to earth
- -G61 defective
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Continued on 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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00524
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Continued
Knock sensor 1 -G61
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Implausible signal
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- Knock sensor loose
- Wiring open circuit or short to positive or short to earth or to signal wire screening between knock sensor and engine control unit
- Loose contact or corrosion due to moisture in connector
- Loose assemblies, causing the knock sensor to recognise additional signals (vibrations)
- -G61 defective
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- Reduced power
- Increased fuel consumption
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- Check G61
=> Page 28-18
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