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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 in "Engine fault finding" binder.
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00518
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2212
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Throttle valve potentiometer G69
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Short to positive
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Wiring/G69 has short to positive
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- Check wiring together with G69
, Test step 12
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Open circuit/short to positive
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Open circuit
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G69 defective
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00521
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2242
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CO-Potentiometer
-G74
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G74 defective
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- Check wiring together with G74
=> Page 01-16
, Test step 10
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Open circuit/short to positive
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Wiring open circuit
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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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2312
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Coolant temperature sender
G62
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G62 defective
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- Check wiring together with G62
, Test step 8
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Open circuit/short to positive
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Wiring open circuit
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00523
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2322
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Intake air temperature sender
G42
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G42 defective
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- Check wiring and G42 for short to earth
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Short to earth
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Wiring has short to earth
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Open circuit/short to positive
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G42 defective
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- Check wiring together with G42
, Test step 9
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Wiring open circuit
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00524
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2142
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Knock sensor 1 -G61
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Wiring open circuit/short circuit in sensor wiring
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- Check wiring to G61
, Test step 14
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No signal
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G61 defective
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- Renew G61
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=> 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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00525
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2342
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Lambda probe G39
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G39 defective
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- Check Lambda probe and Lambda regulation
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No signal
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Wiring open circuit
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- Check wiring to G39
, Test step 15
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Short to positive
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G39 defective
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- Check wiring and G39 for short to positive
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Wiring has short to positive
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00532
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2234
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Supply voltage
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Battery voltage above 15.5 V
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- Check alternator
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Signal too high
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Signal too low
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Battery voltage less than 6.1 V
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- Check battery
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=> 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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00545
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2314
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Engine/gearbox electrical connection
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Open circuit in lead 31 from Digifant control unit (J169) to automatic gearbox control unit (J217)
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- Locate and eliminate open circuit using current flow diagram
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No signal
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00552
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2323
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Air mass meter -G19
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Open circuit/short to earth
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Open/short circuit in wiring, G19 defective
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- Check wiring together with G19
, Test step 11
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Short to positive
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Wiring short circuit, G19 defective
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- Check air mass meter potentiometer
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65535
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1111
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Control unit defective
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Components in Digifant control unit (J169)
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- Renew J169
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