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Interrogating and erasing fault memory
Fault codes 01119 - 17509
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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01119
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Gear recognition signal
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Implausible signal
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▪ Stored if the following conditions apply 1 second after starting engine: Engine control unit encoded for automatic gearbox, vehicle speed less that 1 km/h, gear signal "high" during entire period
▪ Fault 18020 is stored at the same time and to be dealt with first
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- Open circuit or short to positive in signal wire between engine control unit and gearbox control unit
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- Engine running problems (juddering gear changes, load change jolts)
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- Reading measured value block, display group 004
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- Signal output in engine control unit defective (control unit defective)
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- Check gear signal
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- Gearbox control unit defective
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- Interrogate fault memory
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|---|
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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01119
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Gear recognition signal
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Signal to earth
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Stored if the following conditions apply for more than 5 seconds: Engine control unit encoded for automatic gearbox, idling speed switch is open, engine speed greater than 2000 rpm, engine load greater than 64%, gear signal "low"
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- Short to earth in signal wire between engine control unit and gearbox control unit
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- Engine running problems (juddering gear changes, load change jolts)
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- Reading measured value block, display group 004
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- Gearbox control unit defective (short to earth is not eliminated on engaging gear)
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- Interrogate fault memory
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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16486
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Air mass meter -G70
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Signal too low
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Stored if signal voltage is less than 0.3 V for more than 0.3 seconds (engine speed less than 2000 rpm)
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- Unmetered air between air mass meter -G70 and engine
- Air cleaner blocked
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- Emergency running mode
- Poor throttle response
- Loss of power
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- Locate and eliminate leak
Replace filter
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- Power supply for
- -G70 defective
- Open circuit or short to earth in signal wire between -G70 and engine control unit
- -G70 defective
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- Engine may cut out after starting or in overrun phase
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- Reading measured value block, display group 001
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit
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|---|
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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16487
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Air mass meter -G70
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Signal too high
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Stored if signal voltage is less than 5 V for more than 0.3 seconds (engine speed less than 2000 rpm)
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- Short to positive in signal wire between -G70 and engine control unit
- Fault in earth supply for -G70
- -G70 defective
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- Emergency running mode
- Poor throttle response
- Loss of power
- Engine may cut out after starting or in overrun phase
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- Reading measured value block, display group 001
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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16500
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Coolant temperature sender -G62
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Implausible signal
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Stored if coolant temperature is less than 55 °C on starting engine and is still less than 70 °C 18 minutes later
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- -G62 supplies implausible signal due to loose contact/corrosion caused by moisture in connector
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- Cold start problems at very low temperatures
- Engine running problems when warm
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- Reading measured value block, display group 001
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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16501
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Coolant temperature sender -G62
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Signal too low
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Stored if signal voltage is less than 0.10 V for more than 1 second when ignition is switched on (corresponds to coolant temperature of more than 200 °C)
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- Short to earth in wiring between -G62 and engine control unit
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- Cold start problems at very low temperatures
- Engine running problems when warm
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- Reading measured value block, display group 001
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- -G62 defective
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- Check -G62
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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16502
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Coolant temperature sender -G62
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Signal too high
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Stored if signal voltage is less than 4.94 V for more than 1 second when ignition is switched on (corresponds to coolant temperature of less than 50 °C)
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- Open circuit or short to positive in wiring between -G62 and engine control unit
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- Cold start problems at very low temperatures
- Engine running problems when warm
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- Reading measured value block, display group 001
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- -G62 defective
- Earth supply to
- -G62 defective
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- Check -G62 => Page 28-27
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit
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Output on V.A.G 1551 printer
|
Possible cause of fault
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Possible effects
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Fault rectification
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16504
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-G69 throttle valve potentiometer.
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Electrical fault in circuit
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▪ Stored if signal voltage is greater than 0.72 V for more than 1 second when ignition is switched on (corresponds to throttle valve being open more than 7 °C)
▪ Fault 17914 is stored at the same time
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- Idling speed switch sticking or defective
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- Loss of power
- Engine running problems
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- Reading measured value blockdisplay group 002 => Page 24-95
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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16505
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Throttle valve potentiometer -G69
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Implausible signal
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Stored if signal voltage is less than 0.96 V for more than 1 second when ignition is switched on (corresponds to throttle valve being open less than 12 °C) under the following conditions: Coolant temperature greater than 70 °C, engine speed 1500... 3500 rpm, engine load greater than 66% (air mass meter signal)
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- Unmetered air between throttle valve and engine (possible leakage in hose connections at air cleaner)
- -G69 incorrectly adjusted
- -G69 loose or shaft connection worn
- Moisture or corrosion in connector at -G69
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- Loss of power
- Engine running problems
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- Reading measured value blockdisplay group 002 => Page 24-95
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Output on V.A.G 1551 printer
|
Possible cause of fault
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Possible effects
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Fault rectification
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16506
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Throttle valve potentiometer -G69
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Signal too low
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Stored if signal voltage is less than 0.1 V for more than 1 second at an engine speed of greater than 600 rpm
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- Open circuit or short to earth in signal wire between -G69 and engine control unit
- Power supply for -G70 defective
- -G69 defective
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- Loss of power
- Engine running problems
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- Reading measured value blockdisplay group 002 => Page 24-95
Rectify short circuit or open circuit
=> "Current Flow Diagrams, Electrical Fault Finding and Fitting Locations" binder
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit
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Output on V.A.G 1551 printer
|
Possible cause of fault
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Possible effects
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Fault rectification
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16507
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Throttle valve potentiometer -G69
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Signal too high
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Stored if signal voltage is greater than 4.9 V for more than 1 second
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- Short to positive in signal wire between -G69 and engine control unit
- Earth supply for -G69 defective
- -G69 defective
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- Loss of power
- Engine running problems
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- Reading measured value blockdisplay group 002 => Page 24-95
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit
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Output on V.A.G 1551 printer
|
Possible cause of fault
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Possible effects
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Fault rectification
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16514
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Bank 1 - Probe 1
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Electrical fault in circuit
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Stored if, 60 seconds after start of control, the difference between min and max. signal voltage is less than 500 mV at an engine temperature of greater than 80 °C
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- Corrosion due to moisture in connector for lambda probe heating or lambda probe
- Lambda probe contaminated/probe slits clogged or dirty
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- Emissions not OK
- Lambda control switches to open loop control
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- Reading measured value block, display group 010
=> Page 24-71
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Output on V.A.G 1551 printer
|
Possible cause of fault
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Possible effects
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Fault rectification
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16516
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Bank 1 - Probe 1
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Voltage too high
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Stored if signal voltage is greater than 1.2 V for more than 1 second after starting engine
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- Short to positive between lambda probe and engine control unit
- Failure of spark plugs, spark plug connectors or ignition cables
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- Lambda control switches to open loop control
- Emissions not OK
- Soot deposits on spark plugs
- Black smoke
|
- Reading measured value block, display group 010
=> Page 01-131
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- Lambda probe defective
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- Check lambda control
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit
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Output on V.A.G 1551 printer
|
Possible cause of fault
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Possible effects
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Fault rectification
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16518
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Bank 1 - Probe 1
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No activity
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Stored if, 90 seconds after starting engine, signal voltage is 370... 430 mV for more than 4 seconds at an engine temperature of greater than 30°C
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- Open circuit between lambda probe and engine control unit
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- Emissions not OK
- Lambda control switches to open loop control
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- Reading measured value block, display group 010
=> Page 01-131
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- Lambda probe defective
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- Check lambda control
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit
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Output on V.A.G 1551 printer
|
Possible cause of fault
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Possible effects
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Fault rectification
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16534
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Bank 2 - Probe 1
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Electrical fault in circuit
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=>Bank1, probe 1
Fault code 16514
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=>Bank 1, probe 1
Fault code 16514
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=>Bank 1, probe 1
Fault code 16514
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16536
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Bank 2 - Probe 1
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Voltage too high
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=>Bank 1, probe 1
Fault code 16516
|
=>Bank 1, probe 1
Fault code 16516
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=>Bank 1, probe 1
Fault code 16516
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16538
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Bank 2 - Probe 1
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No activity
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=>Bank 1, probe 1
Fault code 16518
|
=>Bank 1, probe 1
Fault code 16518
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=>Bank 1, probe 1
Fault code 16518
|
|
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|---|
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Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
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16554
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Bank 1, fuel metering system
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Malfunction
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Stored if, during learning process, the difference between newly learned and stored lambda learned value is greater than 8%
|
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- Oil dilution (fuel in engine oil)
- Leakage air in area of intake manifold
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- Emissions not OK
|
- Reading measured value block, display group 005 or 006.
onwards
|
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- Biased signal supplied by air-mass meter -G70
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- Reading measured value block, display group 001
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|
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- Oil combustion caused by defective pistons
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|
- Check compression
|
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Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
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16555
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Bank 1, fuel metering system
|
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System too lean
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Stored if lambda control has exceeded learned value limit in "Enrichment" direction but lambda probe still detects "Mixture too lean"
|
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- Fuel pressure regulator defective
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- CO upstream of catalytic converter less than 0.3%
|
- Reading measured value block, display group 005 or 006
|
|
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- Fuel filter clogged
- Insufficient fuel pump delivery
|
|
- Check fuel pump delivery rate
|
|
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|
Continued ▼
|
|
|
|
|
|---|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16555
|
(Fault 16555 continued)
|
|
|
|
Bank 1, fuel metering system
|
|
|
|
|
|
System too lean
|
- Unmetered air downstream of air mass meter -G70
|
- CO upstream of catalytic converter less than 0.3%
|
- Reading measured value block, display group 001
|
|
|
|
- Leakage air from exhaust system as far as lambda probe
|
|
- Locate and eliminate cause
|
|
|
|
- ACF solenoid 1 -N80 sticking
|
|
- Check ACF solenoid 1 -N80 for leaks
|
|
|
|---|
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Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16556
|
|
|
|
|
Bank 1, fuel metering system
|
|
|
|
|
|
System too rich
|
Stored if lambda control has dropped below learned value limit in "Leaning" direction but lambda probe still detects "Mixture too rich"
|
|
|
|
- Fuel pressure regulator defective
|
- Increased fuel consumption
|
- Check system pressure
|
|
|
|
- Injector not closing
|
- Black smoke
- Soot on spark plugs
- CO upstream of catalytic converter greater than 1%
|
- Check injectors
|
|
16557
|
|
|
|
|
Bank 2, fuel metering system
|
|
|
|
|
|
Malfunction
|
=>Bank 1, fuel metering system
Fault code 16554
|
=>Bank 1, fuel metering system
Fault code 16554
|
=>Bank 1, fuel metering system
Fault code 16554
|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16558
|
|
|
|
|
Bank 2, fuel metering system
|
|
|
|
|
|
Too lean
|
=>Bank 1, fuel metering system
Fault code 16555
|
=>Bank 1, fuel metering system
Fault code 16555
|
=>Bank 1, fuel metering system
Fault code 16555
|
|
16559
|
|
|
|
|
Bank 2, fuel metering system
|
|
|
|
|
|
System too rich
|
=>Bank 1, fuel metering system
Fault code 16556
|
=>Bank 1, fuel metering system
Fault code 16556
|
=>Bank 1, fuel metering system
Fault code 16556
|
|
|
|---|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16706
|
|
|
|
|
Engine speed sender -G28
|
|
|
|
|
|
No signal
|
No ignition or injection if this fault is detected on starting engine
|
|
|
|
- Open circuit or short to earth or short to positive in signal wire
|
- Engine will not start/cuts out
|
- Rectify open circuit or short circuit
=> "Current Flow Diagrams, Electrical Fault Finding and Fitting Locations" binder
|
|
|
|
- -G28 loose or defective
- Gap between -G28 and ring gear of flywheel greater than 1.2 mm
|
|
- Reading measured value block, display group 003
|
|
|
|
- Faulty signal input in engine control unit (control unit defective)
|
|
- Renew engine control unit .
|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16711
|
|
|
|
|
Knock sensor 1 -G61
|
|
|
|
|
|
Signal too low
|
Stored if output voltage of knock sensor too low (coolant temperature greater than 20 °C, engine speed greater than 3500 rpm, engine load greater than 16%). The ignition timing is then retarded by 12° crankshaft in map knock areas (engine load greater than 40%).
|
|
|
|
- Knock sensor loose
|
- High fuel consumption
- Loss of power
|
- Tightening torque for knock sensor: 20 Nm
|
|
|
|
- Corrosion at connector of -G61
- Open circuit or short to earth in signal wire between -G61 and engine control unit
- Open circuit in sender earth wire between -G61 and engine control unit
|
- Abrupt loss of power (similar to misfiring)
|
- Reading measured value block, display group 015 or 016
Rectify open circuit or short circuit
=> "Current Flow Diagrams, Electrical Fault Finding and Fitting Locations" binder
|
|
|
|
Continued ▼
|
|
|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16711
|
(Fault 16711 continued)
|
|
|
|
Knock sensor 1 -G61
|
|
|
|
|
|
Signal too low
|
- Knock sensor defective
|
|
- Check -G61 => Page 28-35
|
|
|
|
- Faulty signal input in engine control unit (control unit defective)
|
|
- Renew engine control unit .
|
|
16716
|
|
|
|
|
Knock sensor 2 -G66
|
|
|
|
|
|
Signal too low
|
=>Knock sensor 1 -G61
Fault code 16711
|
=>Knock sensor 1 -G61
Fault code 16711
|
=>Knock sensor 1 -G61
Fault code 16711
|
|
|
|---|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16721
|
|
|
|
|
Crankshaft position sensor
|
|
|
|
|
|
Signal too low
|
Stored if signal from crankshaft position sensor is not detected for more than 3 seconds at an engine speed of 25 ... 2000 rpm
|
|
|
|
- Ignition timing sender-G4
- -G4 loose
- Gap between -G4 and groove at crankshaft balancing weight greater than 1.3 mm
|
- If fault occurs before starting engine:
- Engine will not start (no ignition and injection)
- If fault occurs after starting engine:
- Fault is stored
|
- Check tightness of -G4 (bottom left in cylinder block)
|
|
|
|
- -G4 defective
|
|
- -Check G4 => Page 28-16
|
|
|
|
- Open circuit or short to earth in signal wire between -G4 and engine control unit
|
|
- Rectify open circuit or short circuit
=> "Current Flow Diagrams, Electrical Fault Finding and Fitting Locations" binder
|
|
|
|
- Faulty signal input in engine control unit (control unit defective)
|
|
- Renew engine control unit .
|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16785
|
|
|
|
|
EGR
system
|
|
|
|
|
|
Throughput too low
|
Stored if EGR temperature signal is less than 65°C for more than 45 seconds under the following conditions: Coolant temperature greater than 60 °C, idling speed switch open, throttle valve angle less than 42.5°, vehicle speed 70... 105 km/h, EGR duty cycle greater than 50%, engine speed 1500... 3000 rpm, engine load 16... 60%
|
|
|
|
- Vacuum pipe kinked/dropped off
- Mechanical EGR valve permanently closed
|
|
- Check EGR system => Page 24-105
|
|
|
|---|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16786
|
|
|
|
|
EGR
system
|
|
|
|
|
|
Throughput too high
|
Stored if EGR temperature signal in warm-up phase is greater than 60°C measured on cold start (-15... +30 °C coolant temperature) and at 35 °C coolant temperature
|
|
|
|
- Mechanical EGR valve permanently open/leaking
|
- Rough idling
- Poor starting
- Jolting
- Sudden loss of power
|
- Check EGR system => Page 24-105
|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16885
|
|
|
|
|
Vehicle speed signal
|
|
|
|
|
|
Implausible signal
|
Stored if, during overrun cut-off phase lasting more than 4 seconds, the vehicle speed signal is less than 3 km/h under the following conditions: Coolant temperature greater than 80 °C, engine speed 1300... 6000 rpm
|
|
|
|
- Speedometer sender/road speed sender -G22/-G68 defective
- Speedometer -G21 defective
- Open circuit or short circuit between speedometer sender and speedometer
- Open circuit or short in wiring between dash panel insert and engine control unit
|
- No air-conditioner compressor shut-off in first gear at full throttle
- Brief deviation between idling speed and specified speed
- Load change jolt
|
- Check speed signal => Page 01-107
Rectify open circuit or short circuit
=> "Current Flow Diagrams, Electrical Fault Finding and Fitting Locations" binder
|
|
|
|
Continued ▼
|
|
|
|
Output on V.A.G 1551 printer
|
Possible cause of fault
|
Possible effects
|
Fault rectification
|
|
16885
|
(Fault 16885 continued)
|
|
|
|
Vehicle speed signal
|
|
|
|
|
|
Implausible signal
|
- Faulty signal input in engine control unit (control unit defective)
|
|
- Renew engine control unit .
|
|
16989
|
|
|
|
|
Control unit defective
|
|
|
|
|
|
|
Stored in the event of errors in ROM/RAM or EPROM
|
|
|
|
- Engine control unit defective
|
- Engine will not start
|
- Replace engine control unit => Page 24-20
|
Note on fault code 16885:
Start by checking whether speedometer reading is OK. If reading is not OK, fault can be ignored.
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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17509
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Bank 1 - Probe 1
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Voltage too low/leakage air
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Stored if, 90 seconds after starting engine, lambda control has reached rich stop more than 20 times for 2 seconds at a coolant temperature of greater than 30 °C
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- Short to earth between lambda probe and engine control unit
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- CO upstream of catalytic converter less than 0.3%
- Lambda control switches to open loop control
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- Reading measured value block, display group 010
=> Page 01-131
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- Lambda probe defective
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- Check lambda control
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- Faulty signal input in engine control unit (control unit defective)
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- Renew engine control unit .
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- Fuel pressure regulator defective
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- Check system pressure
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Continued ▼
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Output on V.A.G 1551 printer
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Possible cause of fault
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Possible effects
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Fault rectification
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17509
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(Fault 17509 continued)
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Bank 1 - Probe 1
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Voltage too low/leakage air
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- Fuel filter clogged
- Insufficient fuel pump delivery
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- CO upstream of catalytic converter less than 0.3%
- Lambda control switches to open loop control
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- Check fuel pump delivery rate
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- ACF solenoid 1 -N80 sticking
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- Check ACF solenoid 1 -N80 for leaks
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- Leakage air from exhaust system as far as lambda probe
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- Locate and eliminate cause
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- Unmetered air downstream of air mass meter -G70
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- Reading measured value block, display group 001
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