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Fault table, fault codes 00533...17978
Fault table, fault codes 00533...17978
Notes on fault table
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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 after 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
, Checking injectors
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- Power steering pressure switch (F88) defective
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- Engine stops when steering is at full lock
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- Check signal from power steering pressure switch => Page 24-144
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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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- Unmetered air after air mass meter
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- Check intake air system for leaks (unmetered air) => Page 24-73
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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 control
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- Injector defective (blocked)
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- Engine running problems
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- Check N30...N33
=> Page 24-62
, Checking injectors
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- Fuel pressure regulator defective
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- Check fuel pressure regulator => Page 24-69
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- Fuel pump defective
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- Check fuel pump
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- Fuel tank empty
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- Fill vehicle tank
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- Unmetered air after air mass meter
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- Check intake air system for leaks (unmetered air)
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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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- See previous page
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- Check N80 => Page 01-57
, Final control diagnosis
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- Injector defective (not closing completely)
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- Check N30...N33
=> Page 24-62
, Checking injectors
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- Fuel pressure regulator defective
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- Check fuel pressure regulator => Page 24-69
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Note:
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◆ If the fault "Lambda control upper stop value" is recorded, this means that the lambda control has reached the "mixture enrichment" regulating limit. However, the lambda probe is still detecting a "lean" mixture.
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◆ If the fault "Lambda control lower stop value" is recorded, this means that the lambda control has reached the "mixture leaning down" regulating limit. However, the lambda probe is still detecting a "rich" mixture.
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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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00557
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Power steering pressure switch -F88
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Short to earth
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- Short to earth
- -F88 defective
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- Engine stops when steering is at full lock
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- Check signal from power steering pressure switch => Page 24-144
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If the fault "00557" is stored, it is possible that the subsequent fault "00533 lower limit value" has also be stored.
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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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00609
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Ignition output 1
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Short circuit to positive
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- Open circuit or short to positive in wiring between engine control unit and output stage of ignition coil
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- Starting problems
- Very rough running in all engine load ranges
- Severe loss of power
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- Rectify short or open circuit using current flow diagram
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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- Ignition coil end stage earth defective
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- Check ignition coils
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- Output stage 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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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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00610
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Ignition output 2
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Short circuit to positive
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- See fault code 00609
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- See fault code 00609
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- See fault code 00609
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Note:
Ignition outputs 1 and 2 are the outputs on the engine control unit via which the engine control unit activates the output stage of the ignition coils.
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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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00625
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Speed signal
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Implausible signal
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- Speedometer sender (G22) defective
- Wiring open circuit or short between (G22) and speedometer (G21)
- G21 defective
- Wiring open circuit or short between dash panel insert and engine control unit
- Short in the signal wire between speedometer and another control unit which uses this speed signal
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- No air conditioner compressor switch-off in 1st gear at full throttle
- Idling speed briefly deviates from the specified speed
- Systems which use the speed signal not functioning correctly
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- Check speed signal => Page 24-140
Rectify wiring open circuit or short using current flow diagram
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- Signal input in engine control unit defective (control unit defective)
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No activity
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- Renew engine control unit
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Note:
If fault code 00625 is recorded the engine control unit assumes a fixed substitute value of 5 km/h.
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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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00635
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Lambda probe heating before Catalyst
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Defective
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- Wiring open circuit or short to positive or short to earth in wiring from engine control unit to Lambda probe
- G39 defective
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- Fuel smells
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- Check Lambda probe heating
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- Fuse 43 defective
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- Check fuse
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Notes:
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◆ The positive power supply to the lambda probe heating comes via the fuel pump relay.
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◆ The earth connection for the lambda probe heating is provided by the engine control unit, i.e. the entire current supply for the lambda probe heating comes via the engine control unit.
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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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00650
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Clutch pedal switch -F36
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Short to positive
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- Wiring open/short circuit
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- Cruise control system not functioning
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- Check clutch pedal switch signal
=> Page 24-147
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00668
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Vehicle system voltage terminal 30
Open circuit
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- Open circuit/loose contact in permanent voltage supply to engine control unit
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- Check engine control unit voltage supply => Page 24-110
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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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00671
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CCS Switch -E45
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Implausible signal
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- E45 defective
- Wiring open/short circuit
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- Cruise control system not functioning
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- Check cruise control system
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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Vehicles with air conditioner and high pressure sender G 65 (from 05.98)
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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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01013
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Air conditioner compressor load signal
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Open circuit/short to earth
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- Wiring open circuit or short to earth
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- Check measured value block 57
Rectify wiring open circuit or short using current flow diagram
=>Current flow diagrams, Electrical fault finding and Fitting locations binder
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Short to positive
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- Short to positive
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- Check measured value block 57
Rectify short circuit using current flow diagram
=>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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01087
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Basic setting not carried out
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Implausible signal
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Conditions for basic setting (matching engine control unit to throttle valve control part) not fulfilled:
- Ignition not switched on
- Engine was running
- Idling switch not closed
- Fault in fault memory
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- The engine control unit cannot learn the limit positions of the throttle valve control part, because the conditions for this have not been fulfilled (see possible fault cause)
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- Match engine control unit to throttle valve control part
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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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01087
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Basic setting not carried out
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Implausible signal (cont.)
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- Battery voltage too low (below 8V)
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- See previous page
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- Check engine control unit voltage supply => Page 24-101
Check battery level of charge
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- Implausible throttle valve potentiometer and throttle valve positioner potentiometer voltage (not clearly recognised by control unit; throttle valve not completely closed)
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- Check throttle valve control part
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- Throttle valve positioner sticking/mechanically damaged
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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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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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01126
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Engine speed signal
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Defective
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- Open circuit or short to positive or earth in signal wire between engine control unit and dash panel insert
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- Rev counter not functioning
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- Rectify short or open circuit using current flow diagram
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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- Faulty signal input in dash panel insert
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- Fit a new dash panel insert
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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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Note on fault code 01126:
In this case the "engine speed signal" is not the signal from the engine speed sender (located on the crankshaft) to the engine control unit, but rather the signal from the engine control unit to the dash panel insert. This signal is also used for various other systems (e.g. rev counter, air conditioner etc.).
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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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01163
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Backfire
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- Misfiring
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- Intake system leaking
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- Check intake system for leaks (unmetered air) => Page 28-11
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Note:
Before starting the engine again, the fault entry must be erased using V.A.G 1551, V.A.G 1552 or VAS 5051.
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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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01177
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Engine control unit
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Defective
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- Open circuit in earth connections to engine control unit
- Engine control unit defective
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- Engine will not start
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- Check earth connections using current flow diagram
Replace engine control unit
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01242
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Output stages in control unit
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Defective
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- Control unit output stages overheated
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- Engine will not start
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- Replace engine control unit
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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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01243
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Intake manifold change-over valve -N156
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Output open
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- Wiring open circuit or short to positive or short to earth in the wiring between N156 and engine control unit
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- Poor acceleration
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- Check N156 => Page 01-57
, final control diagnosis
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Short to positive
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- Voltage supply for N156 defective
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Short to earth
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- N156 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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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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01247
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Activated charcoal filter solenoid valve 1 -N80
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Short to earth
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- Short to earth in the wiring between N80 and engine control unit
- N80 defective
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- Possible jerking in part load range
- Possible fuel smells in vehicle
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- Check N80
=> Page 01-57
, final control diagnosis
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Short to positive
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- Short to positive in the wiring between N80 and engine control unit
- N80 defective
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Output open
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- Wiring open circuit between N80 and engine control unit
- Voltage supply for N80 defective
- N80 defective
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- Fuse 43 defective
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- Check fuse
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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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01249
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No.1 cyl. injector -N30
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Short circuit to positive
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- Open circuit or short to positive or earth in wiring between engine control unit and injector
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- Engine idles roughly or cuts out
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- Test injectors
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Short circuit to
earth
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- Injector defective
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Output open
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- Fault in power supply to injector
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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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- Fuse 32 defective
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- Check fuse
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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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01250
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No. 2 cyl. injector -N31
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Short to earth
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Short to positive
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see fault code 01249, No. 1 Cyl. for N31
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Output open
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01251
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No. 3 cyl. injector -N32
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Short to earth
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Short to positive
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see fault code 01249, No. 1 Cyl. for N32
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Output open
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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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01252
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No. 4 cyl. injector -N33
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Short to earth
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Short to positive
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see fault code 01249, No. 1 Cyl. for N33
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Output open
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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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01259
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Fuel pump relay -J17
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Defective
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- Fuel pump relay defective
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- Check J17 => Page 01-57
, final control diagnosis
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- Open circuit or short to positive in the wiring from engine control unit to fuel pump relay
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- If there is an open circuit/short to positive: Engine will not start
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- Eliminate open circuit/short using current flow diagram
=> Current flow diagrams, Electrical fault finding and Fitting locations binder
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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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Note on fault code 01259:
If the fault "01259" is stored the faults "00520, 00635, 01247 and 01249...01252 could also be stored as these components are supplied with voltage via the fuel pump relay.
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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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01312
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Drive train data bus defective
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- Data bus wiring defective
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- Engine running problems (gear shift jerk, load change jolt)
- No Electronic Stability Programme
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- Check data bus wiring:
=> Page 24-122
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01315
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Gearbox control unit no communication
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- Data bus wiring to gearbox control unit defective
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- Engine running problems (gear shift jerks, load change jolt)
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- Check data bus wiring:
=> Page 24-122
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01316
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Brake control unit no communication
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- Data bus wiring to ABS control unit defective
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- No Electronic Stability Programme
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- Check data bus wiring:
=> Page 24-122
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01341
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Airbag control unit
-J234
no communication
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- Data bus wiring to airbag control unit defective
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- No fuel pump shut-off during accident with airbag triggered
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- Check data bus wiring:
=> Page 24-122
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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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17978
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Engine control unit blocked
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- Start attempted with a non-authorised key.
- Attempted manipulation
- Short in communication cable
- Incorrect coding
- Fault in immobilizer system
- Immobilizer control unit defective/missing
- Engine control unit has been replaced and not matched to the immobilizer
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- Engine starts briefly and then stops again
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- Match engine electronics control unit to electronic immobilizer => Page 24-115
Check electronic immobilizer:
=> Repair group 96; Servicing electronic immobilizer
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Note to fault code 17978:
The control electronics for the immobilizer are located inside the dash panel insert and cannot be replaced separately.
If starting is attempted with an unauthorised key a permanent fault will be stored. After a subsequent start with an authorised key the fault will be converted to a sporadic fault.
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