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Description

The table below lists the ECU DTC (diagnostic trouble codes) and the corresponding code generated by blink codes.

DTCBlink CodePossible causes of faultPossible effectsRectifying Fault
00000

No fault recognised
4444 If a complaint exists, fault not recognised by self diagnosis--
00000

End of output
0000---
00281
Road Speed Signal (G68)
No signal
1231 -Open Circuit in wiring or short
  circuit from contact 50 at J220
  to Speedometer G21 in dash panel insert
-Speedometer sender G22 faulty
-Speedometer G21 faulty
-A/C compressor does not cut out
  in 1st gear at full load
-Engine speed briefly drops below
  idling speed when disengaging clutch
  in overrun phase
-Engine speed limited to 5300rpm
  (only with USA coding)
-Test road speed signal

-After repair, perform brief road test
00513
Engine speed sender (G28)
-Implausible signal
-No signal







- Mechanical fault
2111 -Metal swarf on G28
-Base of G28 loose
-Clearance from G28 to ring gear
  of flywheel > 1.2mm
-Teeth at ring gear of flywheel
  broken off
-Open circuit in wiring between
  3 pin connector in engine
  compartment and G28
-Open circuit in wiring between J220
  and G28
-Short circuit between contact 47 of
  J220 and screening or engine earth
-Open circuit in screening of G28
-3 pin plug connection of G28 & G4
  in engine compartment mixed up
-G28 faulty
-Input for G28 at J220 faulty
  (J220 faulty)
-Engine does not start
 -Misfiring
 -Engine cuts out







 -Engine does not start
-Test G28
-Rectify short circuit or open circuit








-Plug connectors G4 & G28 correctly
00514
Ignition timing (G4)
-No signal
2112 -Base of G4 loose
-Clearance from G4 to pin
  of flywheel > 1.2mm
-Pin on flywheel bent or
  broken off
-Open circuit in wiring between
  3 pin connector in engine
  compartment and G4
-Open circuit in wiring between J220
  and G4
-Short circuit between contact 49 of
  J220 and screening or engine earth
-Open circuit in screening of G4
-3 pin plug connection of G4 & G28
  in engine compartment mixed up
-G4 faulty
-Input for G4 at J220 faulty
  (J220 faulty)
-Fault prior to engine start or
  attempt at starting:
  engine does not start
 -Fault after engine start: engine
continues running in limp mode




 -Engine does not start
-Test G4
-Rectify short circuit or open circuit







-Plug connectors G4 & G28 correctly
00515
Hall Sender (G40)

-Open circuit/short
 cicuit to positive
-Signal to positive
-Short circuit to earth
-Signal to earth
-Mechanical fault
-Fault in basic setting
2113 -No supply voltage for G40 from J220
-No earth for G40
-Open circuit in signal wire to J220
  or short to earth of signal wire
-Short circuit between contacts 8 & 12
  at J220
-Open circuit in wiring between 3 pin
  plug connection in engine compartment
  abd J220
-Position of pin of G4
-G40 faulty
-Input for G40 in J220 faulty (J220 faulty)
-Toothed belt jumped off




-Basic setting of hall sender
-Pin of ignition timing sender -G4 bent
  or broken off
-Engine does not startr





-Poor performance
-Test G40

-Rectify short circuit or open circuit






-Check toothed belt (camshaft setting)
-Test G40
-Basic setting of hall sender
-Check pin of G4
00516
Idling speed switch (F60)

-Open circuit/short circuit
  to positive
-Short circuit to earth
2121 -Setting of F60
-Throttle valve jamming

-Closing damper jamming or incorrectly
  set
-Footmat resting on accelerator pedal
-Accelerator cable adjustment
-Open circuit in wiring betwen F60 and
  J220
-Input for F60 in J220 faulty (J220 faulty)
-Cable from F60 to J220 has short to earth
-Moisture in throttle valve connector
-Idle speed control moves to
  open loop control

-A/C compressor is switched off


-Idling speed not within specified range
-Test F60 and adjust

-Check closing damper




-Adjust throttle cable
-Rectify open circuit in wiring
-Rectify short circuit
00518
Throttle Valve
Potentiometer G69

-Open circuit / short
  circuit to positive
-Signal too large
-Short circuit to earth
-Signal too small
-Implausible signal
2212 -Open circuit or short circuit
  to positive in G69 or in cable
  connection between G69 & J220
-Short circuit to earth in G69
  or in cable connection between
  G69 and J220
-G69 faulty
-J220 faulty
Moisture or corrosion in plug connection
  at G69
-Boost pressure is not reached
-Poor performance
-Test G69
00519
Intake manifold
pressure sender G71

-Signal too small
-Signal too large
-Control difference
2222 -Vacuum line from intake manifold
  to J220 interrupted, blocked, kinked
  or crimped
-Liquid seperator in hose line from intake
  manifold to J220 full of liquid
-Blow off valve faulty
-Solenoid valve for boost pressure limiter
N75 faulty
-Pressure sensor in Motronic control unit
J220 faulty
-Turbocharger faulty
-Poor performance -Check / drain vacuum lines of liquid
  seperator
-Test solenoid valve for boost pressure limiter
-Test turbocharger
00522
Coolant temperature
sender G62
2312 -Short circuit to earth
-Moisture in connector of G62
-Open circuit between G62 and J220
-Contact resistances between G62 & J220
-G62 faulty
-Input of G62 in J220 faulty (J220 faulty)
-Cold starting problems in very cold temperatures
-Driving faults during warm up phase
-Test G62
00523
Intake air temperature
sender G42

-Short circuit to earth
-Open circuit / short
  circuit to positive
2322 -Short circuit to earth
-Open circuit in wiring between G42 & J220
-G42 faulty
-Input of G42 in J220 faulty (J220 faulty)
-Possible driving faults in warm up phase
  at low temperatures
-Test G42
00524
Knock sensor #1 G61

-No signal
2142 -Corrosion in connector
-G61 loose
-Open circuit in wiring or short circuit
  in wiring between G61 & J220
-Short circuit between G61 and earth
  or to screening
-G61 faulty
-Input for G61 in J220 faulty (J220 faulty)
-High fuel consumption
-Poor performance
-Boost pressure is not reached
-Repair contacts
-Tightening torque 20Nm
-Rectify open or short circuit
00525
Lambda probe G39

-Short circuit to positive
-No signal
-Short circuit to earth
2343 -Open circuit in wiring to J220
-Probe heater not operating
-Fuse #25 faulty
-Heating resistor in probe faulty
-Wiring of probe heater
-Short circuit of signal wire to earth
-Short circuit of signal wire to screening
-Fuel tank empty (at least 10 litres)
-Fuel system pressure
-Failure of spark plugs, ignition coils
  and ignition output stages
-Ingress of air to G70
-Leak in exhaust system up to catalyst
-Faulty lambda probe
-Open circuit in earth cable to contact 10
  J220 to engine block
-Exhaust not in order
-Increased fuel consumption
-Formation of black smoke
-Spark plugs soot up
-Lambda control moves to open loop
-Rectify open circuit in wiring
-Test lambda probe heater
-Basic setting of engine with
VAG1551 /Vag Com
00528
Altitude sensor F96

-Open circuit / short
circuit to positive
-Short circuit to earth
2223 -Short circuit to positive in F96 or
  in cable connection between F96 & J220
-Short circuit to earth in F96 or
  in cable connection between F96 & J220
-F96 faulty
-Input for F96 in J220 faulty (J220 faulty)
-Poor performance
-Boost perssure not reached
-Test F96
-Test boost pressure
00532

Supply Voltage

-Signal too large
-Signal too small
2234 -Supply voltage greater than 16 volts
-Alternator faulty
-Starting with two series connected batteries
-Poor earth connection to J220
-Battery discharged
-Current drain with igntion off
-J220 destroyed

-Idling speed not within specified range
-Voltage below 6 volts
-Engine not running
-Test voltage

-Check battery charge state
-Test voltage supply
00533
Idle speed control

-Adaptation limit esceeded
-Adaptation limit
-Adapatation limit
  no reached
2231 -Idling speed stabilisation valve N71 sticking
-Air mass meter G70 characteristic curve shifted
-Contact resistance at connector of N71
-N71 sticking in open position
-G70 characteristic curve shifted
-Ingress of air betwen G70 an N71
-Throttle valve potentiometer G69
  incorrectly set

Throttle body valve jamming
-Idling speed too low




-Idling speed too high




-Engine vibrating
-Poor throttle response
-Irregular Idling
-Test N71
-Test G70




-Recify air leak

-Test G69and adjust

-Test throttle body valve
  replace if necessary
00537

Lambda sensor control

-Control limit exceeded
-Control limit not reached
2341 -Fuel tank empty at least 10 litres
-Fuel system pressure too low
-Failure of spark plugs, ignition coils
  and ignition output stages
-Ingress of air to G70
-Leak in exhaust system up to catalyst
-Faulty lambda probe
-Fuel system pressure too high
-CO upstream of catalyst less than 0.3%


-Formation of black smoke
-Spark plugs sooted
-CO upstream of catalyst greater than 1%
-Fill up fuel tank
-Recify air leak
-Test lambda probe
-Test fuel system pressure
-Check hose connection intake manifold/
  pressure regulator (fuel shut off
 valve on overrun
-Check fuel return line of fouling, kinking
  and damage
00540

Knock Sensor #2, G66

- No change in signal
2144 -Corrosion in connector
-G66 loose
-Open circuit in wiring or short circuit
  between G66 and J220
-Short circuit between G66 and earth
  or to screening
-G66 faulty -Input for G66 in J220 faulty (J220 faulty)
-High fuel consumption
-Poor performance
-Boost pressure is not reached
-Repair contacts
-Tightening torque 20Nm
-Rectify open or short circuit
00543

Engine speed to max exceeded

-Signal too large
2214 -Engine overrevs (switching fault) -Possible engine damage -Engine speed has exceeded 7200 RPM
  as a result of an operating fault
00544

Boost pressure to maximum
  exceeded

-Implausible signal
-Signal too large
2224 -Ingress of air downstream of turbocharger
-Blow off valve faulty
-Solenoid valve for boost pressure limiter
  N75 faulty
-Leak in vacuum line from inlet
  manifold to J220 or is disconnected
-Pressure sensor in Motronic control
  unit J220 is faulty
-Hard misfire at full load
-Boost pressure too high





-Severe boost pressure fluctuations at full load
-Check connections
-Test blow off valve
-Test solenoid valve for boost
  pressure limiter N75
-Test boost pressure
00553

Air mass meter G70

-Signal too large
-Signal too small
2324 -Open circuit in wiring between G70 and J220
-Voltage supply to G70 interrupted or short
  to earth
-Short to earth of signal wire to J220
-Short circuit of signal wire to J220
-G70 faulty
-Input for G70 in J220 faulty (J220 faulty)
-Slight handling faults (performance) -Test G70
00561

Mixture adaptation

-Adaptation limit
 (multiplicative)
  exceeded
-Adaptation limit
  (multiplicative) not
  reached
-Adaptation limit
  (additive) exceeded
-Adaptation limit
  (additive) not reached
2413 -Fuel system pressure too low or too high
-Failure of spark plugs, ignition coils
  and ignition output stages
-Ingress of air to G70
-Leak in exhaust system up to catalyst
-Incorrect signal from air mass meter G70
-Increased fuel consumption
-Formation of black smoke
-Spark plugs sooted up
-Fill fuel tank
-Recify leak
-Test fuel system pressure
-Test G70
00577

Knock control cyl #1

00578

Knock control cyl #2

00579

Knock control cyl #3

-Control limit exceeded
2141 -Poor fuel quality (less than 91 RON)
-Open circuit in signal wire from engine
  speed sender G28 or ignition timing sender
  G4 (loose contact, sporadic fault) or
  signal wire wrongly connected
-Abnormal engine noises (loose ancilliary)
-Open circuit in screening of G61
-Injector fouled
-High fuel consumption
-Poor performance




-Max speed is not reached

-Boost pressure reduction
-Replace J220
-Fill tank with at least 91 RON
-Test G28 and G4




-Rectify open circuit
-Replace injector
00580

Knock control cyl #4

00581

Knock control cyl #5

-Control limit exceeded
2143 -Poor fuel quality (less than 91 RON)
-Open circuit in signal wire from engine
  speed sender G28 or ignition timing sender
  G4 (loose contact, sporadic fault) or
  signal wire wrongly connected
-Abnormal engine noises (loose ancilliary)
-Open circuit in screening of G66
-Injector fouled
-High fuel consumption
-Poor performance




-Max speed is not reached

-Boost pressure reduction
-Replace J220
-Fill tank with at least 91 RON
-Test G28 and G4




-Rectify open circuit
-Replace injector
01247

Solenoid valve 1 for
activated charcoal
canister N80

-Short circuit to positive
-Open circuit/short circuit
  to earth
4343 -Short circuit to positive in N80 or in the cable
  connection between N80 and J220
-Short circuit to earth in N80 or in the cable
  connection between N80 and J220
-Thermofuse S75 faulty
-Open circuit in wiring
-Short circuit to positive in N80
  or in the cable connection between
  N80 and J220
-Short circuit to earth in N80
  or in the cable connection between
  N80 and J220
-Thermofuse S75 faulty
-Open circuit in wiring
-Test N80
01249

Injector cyl #1 N30

-Open circuit/short
  circuit to earth
-Short circuit to
  positive
4411 -Short circuit to earth
-Open circuit in wiring
-Fuse S28 faulty
-Short circuit to positive at
  connector or in injector
-Engine does not run smoothly -Test injectors
-Check wiring & fuse S28
01250

Injector cyl #2 N31

-Open circuit/short
  circuit to earth
-Short circuit to
  positive
4412 -Short circuit to earth
-Open circuit in wiring
-Fuse S28 faulty
-Short circuit to positive at
  connector or in injector
-Engine does not run smoothly -Test injectors
-Check wiring & fuse S28
01251

Injector cyl #3 N32

-Open circuit/short
  circuit to earth
-Short circuit to
  positive
4413 -Short circuit to earth
-Open circuit in wiring
-Fuse S28 faulty
-Short circuit to positive at
  connector or in injector
-Engine does not run smoothly -Test injectors
-Check wiring & fuse S28
01252

Injector cyl #4 N33

-Open circuit/short
  circuit to earth
-Short circuit to
  positive
4414 -Short circuit to earth
-Open circuit in wiring
-Fuse S28 faulty
-Short circuit to positive at
  connector or in injector
-Engine does not run smoothly -Test injectors
-Check wiring & fuse S28
01253

Injector cyl #5 N83

-Open circuit/short
  circuit to earth
-Short circuit to
  positive
4421 -Short circuit to earth
-Open circuit in wiring
-Fuse S28 faulty
-Short circuit to positive at
  connector or in injector
-Engine does not run smoothly -Test injectors
-Check wiring & fuse S28
01257

Idle speed Stabilisation
Valve N71

-Short circuit to positive
-Open circuit / short
  circuit to earth
4431 -Short circuit to positive in N71 or in
  cable connection between N71 and contact 4
  of J220
-Short circuit to earth in N71 or in
  cable connection between N71 and J220
-Fuse S24 faulty
-Open circuit in wiring
-At engine operating temperature idling
  speed differs from specification (800+rpm)
-With cold engine, engine may cut out
-In emergency running mode, idling speed
  1100-1200rpm when warm
-A/C compressor cuts out when idling
-Irregular idling speed
-Test N71
01262

Solenoid valve for boost
  pressure limiter N75

-Short circuit to positive
-Open circuit / short
  circuit to earth
4442 -Short circuit to positive in N75 or in
  cable connection between N75 and contact 23
  of J220
-Short circuit to earth in N75 or in
  cable connection between N75 and J220
-Fuse S24 faulty
-Open circuit in wiring
-Boost pressure too high
-Boost pressure too low
-Hard misfire at full load because of
 "Boost pressure to max. exceeded,
  implausible signal" fault
-Test N75
65535

Control unit faulty
1111 -Earth connection to J220 contacts 10,14,19,24
-Control unit faulty
-Engine does not start
-With ignition on, no voltage at contact 37 of J220
-Test earth connection of J220