Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition

Model: Lupo Polo 1,3 PololClassiclEstate GolfNentolBoralCabrio
Beetle Passat Corrado (08192-95) Sharan
7
Engine management
General information
Refer to the front of this manual for general test conditions,
terminology, detailed descriptions of wiring faults and a
general trouble shooter for electrical and mechanical faults.
0 Carry out road test for at least 10 minutes.
Except 2,8/2,9: Ensure accelerator pedal is briefly fully
depressed and engine speed exceeds 3500 rpm.
0 2,8/2,9: Ensure accelerator pedal is briefly fully depressed
and engine speed exceeds 4600 rpm.
0 Automatic transmission in 'P' or 'N'.
If engine does not start: Crank engine for 6 seconds. Leave
ignition switched ON.
Data link connector (DLC)- 2-pin: (A) black, (B)
brownlwhite.
Accessing and erasing
0 The engine control module (ECM) fault memory can only be
accessed and erased using diagnostic equipment
connected to the data link connector (DLC).
Passat, engine code 2E: Self-diagnosis capability only
available from 08/92.
0 Engine code PG: Self-diagnosis capability only available
from 08/92.
0 Engine code 3F: Self-diagnosis capability only available
from 10190.
Engine code PY: Self-diagnosis capability only available
from 1991.
0 Engine code IYIAAZ: Self-diagnosis capability only
available from 10194.
NOTE: Self-diagnosis output using 4-digit trouble codes may not
display all available diagnostic information (early
models).
Trouble code identification
VAG type
4-digit
Fault location
I Probable cause
Engine control module (ECG - defective
Vehicle speed sensor (VSS)
Idle speed control (ISC) actuator
Crankshaft position (CKP) sensor
Camshaft position (CMP) sensor
Closed throttle position (CTP) switch
Knock control - control limit exceeded
Knock sensor (KS) 1
Knock sensor (KS) 2
Throttle position (TP) sensor
Maximum engine RPM exceeded
Manifold absolute pressure (MAP) sensor
Idle speed control (ISC)
Engine control module (ECM) - supply voltage
Mixture adjustment resistor
I Wiring, speedometer, VSS
Throttle valve tightlsticking, wiring, multi-plug
incorrectly wired, ISC actuator
Air gap, metal particles, insecure sensorlrotor, wiring,
CKP sensor
Air gap, insecure sensorlrotor, wiring, poor
connection, fuse, distributorlcamshaft alignment,
CMP sensor
Accelerator cable adjustment, CTP switch
adjustment, wiring, CTP switch
I ECM
I Wiring, KS, ECM
Wiring, KS, ECM
Wiring, poor connection, TP sensor
I Incorrect gear shift, CKPIRPM sensor
TC wastegate regulating valve, hose connection(s),
oil contamination, valve timing, poor connection,
wiring, MAP sensor, ECM
Intake leaklblockage, throttle valve tightlsticking,
IAC valve or ISC actuatorlposition sensor
Fuse, alternator, battery, current draw with ignition
OFF, engine control relay, wiring
Wiring, mixture adjustment resistor
Instrument panel, fuel consumption signal I Wiring short to positive, instrument panel
Engine coolant temperature (ECT) sensor
I Wiring, poor connection, ECT sensor
Enginelgearbox electrical connection 1 Wiring, transmission fault
Intake air temperature (IAT) sensor
Volume air flow (VAF) sensor
Wiring, poor connection, IAT sensor
Intake leak, wiring, VAF sensor
/Autodata
Eng~ne management
725