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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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◆ 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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◆ For wiring check, refer also to "Electrical check",
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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No fault recognised!
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If a fault is present:
Fault not recognised by self diagnosis
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Continue fault finding using fault table: =>"Engine fault finding" binder.
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00281
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Road speed sender
-G68
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No signal from electronic speedometer (G21) or speedometer sender
(G22)
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- Check speed signal
=> Page 01-40
, test step 6
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Implausible signal
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Open circuit
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- Locate open circuit according to current flow diagram and rectify:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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No display on speedometer:
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Speedometer sender (G22) defective
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- Renew G22
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- Continue fault finding according to fault finding programme for MFI:
=> 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 fault cause
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Fault elimination
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00513
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Engine speed sender -G282)
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Open circuit
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- Check wiring together with G28
=> Page 01-40
, test step 28
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No signal
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G28 defective
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- Renew G28 => Page 24-10
, item 25
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Implausible signal1)
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Engine speed sender, sender wheel loose or defective
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- Check sender wheel is seated securely:
=> Repair group 13; dismantling and assembling cylinder block, crankshaft and flywheel
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G28 loose
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- Check G28 is seated securely
=> Page 24-10
, item 25
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1)
In isolated cases, fault may be stored as a result of engine being abruptly stalled (sporadic fault).
2)
If the fault memory is interrogated with ignition switched on, then this fault will always be displayed even if there is no fault.
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00515
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Hall sender -G40
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Wiring open circuit or wiring/G40 short circuit to positive
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- Check G40 => Page 28-13
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Open/short circuit to positive
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TDC markings on distributor do not align
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- Installing distributor => Page 28-7
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Short circuit to earth
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Short circuit to earth in wiring or G40
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- Check G40 => Page 28-13
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TDC markings on distributor do not align
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- Installing distributor => Page 28-7
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00518
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Check G69 => Page 24-34
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Throttle valve potentiometer
-G69
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Wiring open circuit or wiring/G69 has short circuit to positive
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- Check wiring together with G69
=> Page 01-40
, test step 21
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Open circuit/short circuit to positive
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Short circuit to earth
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G69 defective or wiring has short circuit to earth
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00522
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Coolant temperature sender
-G62
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G62 defective
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- Check wiring together with G62 for short circuit => Page 01-40
, test step 18
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Short circuit to earth
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Wiring has short circuit to earth
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- Check G62 => Page 24-40
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Open circuit/short circuit to positive
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G62 defective, or incorrect operation caused by corrosion at connector
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Wiring open circuit or short circuit to positive
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00524
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Knock sensor 1 -G61
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G61 defective
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- Renew G61 => Page 28-3
, item 10
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Open circuit/short circuit to positive
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Wiring open circuit or short circuit in sensor wiring
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- Check wiring to G61
=> Page 01-40
, test step 24
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Open circuit/short circuit to earth
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Wiring open circuit or short circuit in sensor wiring to earth
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No knock detection from Motronic control unit (J220)
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- Renew J220 => Page 24-8
, item 12
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00525
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Lambda probe -G39
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G39 defective
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- Check Lambda probe and Lambda control => Page 24-28
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No signal
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Lambda probe heating defective
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- Check Lambda probe heating relay (J278) => Page 01-40
, test step 5
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Wiring open circuit
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- Check wiring to G39
=> Page 01-40
, test step 20
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Short circuit to positive
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Short circuit to positive in wiring or G39
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- Check wiring to G39
=> Page 01-40
, test step 20
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Wiring open circuit
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- Check wiring and G39 for short to positive or earth
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Short circuit to earth
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Short circuit to earth in wiring or G39
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Fuel tank empty
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- Fill tank / erase fault memory
=> Page 01-27
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00527
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Intake manifold temperature sender -G72
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G72 defective
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- Check G72 => Page 24-38
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Short circuit to earth
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Short circuit in wiring or G72 to earth
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- Check wiring together with G72 for short circuit => Page 01-40
, test step 25
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Open circuit/short circuit to positive
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G72 defective, or incorrect operation caused by corrosion in connector
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Wiring open circuit or short circuit in wiring or G72 to positive
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00532
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Supply voltage1)
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Battery voltage above 16.0 V
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- Check alternator:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Signal too high
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Signal too low
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Battery voltage below 10.0 V
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- Check battery
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1)
Fault recognition: Motronic control unit (J220) checks voltage after engine has been running for 3 minutes
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00533
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Idling speed control
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Idling speed stabilization valve (N71) sticking or soiled
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- Check N71 => Page 01-28
, final control diagnosis
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Adaption limit exceeded
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- Check intake system for leaks (unmetered air)
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Adaption limit not reached
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Unmetered air between air mass meter (G70) and engine
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00535
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First knock control
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Control unit (J220) knock control defective
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- Check wiring together with knock sensor => Page 01-40
, Test step 24
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Implausible signal
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- Renew J220 => Page 24-8
, item 12
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00537
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Lambda control
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Exhaust system leaking between cylinder head and catalyst
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- Check exhaust system:
=> Repair group 26; removing and installing parts of exhaust system
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Control limit exceeded
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Misfiring
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- Check ignition part components
=> Page 28-1
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Intake system leaking
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- Check intake system for leaks (unmetered air) => Page 24-53
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Injector(s) (N30...N33) defective
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- Check N30...N33 => Page 24-49
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Fuel pressure too low
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- Check fuel pressure regulator
=> Page 24-46
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Lambda probe heating defective
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- Check Lambda probe heating relay (J278) => Page 24-11
, Item 33
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Activated charcoal filter solenoid valve 1 (N80) sticks (permanently open)
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- Check N80 => Page 01-28
, final control diagnosis
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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Lambda control continued
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Control limit exceeded
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Short circuit to earth in wiring or G39
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- Check Lambda probe and Lambda control => Page 01-40
, Test step 20
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Control limit not reached
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Fuel pressure too high
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- Check fuel pressure regulator
=> Page 24-46
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Injector(s) (N30...N33) defective, leaking
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- Check N30...N33
=> Page 24-49
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00543
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Maximum engine speed exceeded
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Engine enters governed speed range
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- Erase fault memory => Page 01-27
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Signal too large
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Signal from engine speed sender (G28) disrupted
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- Check wiring together with G28 (screening) => Page 01-40
, test step 28
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00545
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Engine / gearbox electrical connection
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Short to earth in wiring 18 from Motronic control unit (J220) to automatic gearbox control unit (J217)
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- Locate short circuit according to current flow diagram and rectify:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Short circuit to earth1)
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1)
Fault recognition: Motronic control unit (J220) checks voltage after engine has been running for 3 minutes
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00549
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Consumption signal
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Short to positive in wiring 51 from Motronic control unit (J220) to dash panel insert
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- Locate short circuit according to current flow diagram and rectify:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Short circuit to positive
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00553
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Air mass meter -G70
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G70 defective
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- Check G70 voltage supply => Page 01-40
, test step 4
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Open circuit/short circuit to positive
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Open circuit or short circuit to positive
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- Check wiring to G70
=> Page 01-40
, test step 27
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Short circuit to earth
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Wiring or G70 short short to earth
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- If necessary renew G70 => Page 24-18
, Item 8
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G70 defective
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Unmetered air between G70 and engine
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- Check intake system for leaks (unmetered air) Page 24-53
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00561
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Mixture adaption1)
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Fuel pressure not OK
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- Check fuel pressure regulator
=> Page 24-46
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Adaption limit exceeded or not reached
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Misfiring
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- Check ignition part components
=> Page 28-1
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Intake system leaking (unmetered air)
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- Check intake system for leaks (unmetered air) => Page 24-53
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Injector(s) (N30...N33) defective, leaking
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- Check N30...N33 => Page 24-49
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Lambda control faulty
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- Check Lambda probe heating relay (J287) => Page 01-40
, test step 5
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- Check wiring to Lambda probe (G39)
=> Page 01-40
, test step 20
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1)
If faults 00525 or 00533 and 00561 are simultaneously printed out: Rectify fault 00525 or 00533, erase fault memory and after the test drive interrogate fault memory again.
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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Adaption limit exceeded or not reached (continued)
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Exhaust system leaking between cylinder head and catalyst
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- Check exhaust system:
=> Repair group 26; Removing and installing parts of exhaust system
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Activated charcoal filter solenoid valve 1 (N80) sticking (permanently open)
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- Check N80 => Page 01-28
, final control diagnosis
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00609
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Ignition output 1
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Short to positive in wiring or ignition transformer output stage (N152)
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- Check wiring to N152
=> Page 01-40
, test step 23
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Short circuit to positive
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- Check N152 => Page 28-9
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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00640
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Lambda probe heating relay
-J278
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Wiring has short circuit to positive
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- Check J278 => Page 01-28
, final control diagnosis
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Short circuit to positive
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- Locate short circuit according to current flow diagram and rectify:
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Open circuit/short circuit to earth
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Open circuit or short circuit to earth in wiring
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- Check wiring to J278
=> Page 01-40
, test step 5
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01242
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Control unit output stages
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Loose wiring contacts to control elements or Motronic control unit (J220) defective
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- Carry out final control diagnosis
=> Page 01-28
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Mechanical fault
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- Check wiring to control elements for loose contacts, renew J220 if necessary => Page 24-8
, item 12
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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01247
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Activated charcoal filter solenoid valve 1 -N80
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Short circuit to positive in wiring or N80
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- Check N80 => Page 01-28
, final control diagnosis
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Short circuit to positive
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- Check wiring together with N80
=> Page 01-40
, test step 17
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Open circuit/short circuit to earth
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Open circuit or short circuit to earth in wiring
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N80 defective
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- Renew N80 if necessary:
=> Repair group 20; removing and installing parts of fuel system; servicing activated charcoal filter system
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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01249
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Injector cylinder 1-N30
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Short circuit to positive in wiring or N30
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- Check injector => Page 01-28
, final control diagnosis
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Short circuit to positive
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- Check wiring with injector
=> Page 01-40
, Test steps 13...16
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Open circuit/short circuit to earth
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Open circuit or short circuit to earth in wiring
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- Check N30...N33 => Page 24-49
, checking resistance and voltage supply
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N30 defective
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01250
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Injector, cylinder 2 -N31
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=> Cyl. 1, fault code 01249
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=> Cyl. 1, fault code 01249
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01251
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Injector, cylinder 3 -N32
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=> Cyl. 1, fault code 01249
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=> Cyl. 1, fault code 01249
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01252
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Injector, cylinder 4 -N33
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=> Cyl. 1, fault code 01249
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=> Cyl. 1, fault code 01249
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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01257
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Idling speed stabilization valve
-N71
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Short circuit to positive in wiring or N71
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- Check N71 => Page 01-28
, final control diagnosis
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Short circuit to positive
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- Check wiring together with N71
=> Page 01-40
, test step 26
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Open circuit/short circuit to earth
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Open circuit or short circuit to earth in wiring
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- Check idling speed stabilization => Page 24-25
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N71 defective
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- Renew N71 if necessary => Page 24-13
, item 4
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01259
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Fuel pump relay -J17
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J17 defective
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- Check wiring together with J17
=> Page 01-40
, test step 3
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Short circuit to positive
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Short circuit in wiring to positive
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- Renew J17 if necessary
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V.A.G 1551 print-out
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Possible fault cause
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Fault elimination
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17978
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Engine control unit blocked
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The electronic immobilizer control unit (J362) has blocked the motronic control unit
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- Match engine electronic control unit to electronic immobilizer
Check electronic immobilizer:
=> Repair group 96; Servicing electronic immobilizer
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65535
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Control unit defective
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Component in Motronic control unit (J220)
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- Renew J220 => Page 24-8
, item 12
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