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

Model:
Year:
Engine code:
System:
AAE, ABM, ABT
Bosch Mono-Motronic MA1.2.3
AUDI
80 - in underbonnet fuseboxlrelay plate 100lA6 - in underbonnet relay ptate
NOTE: 45 pin ECM multi-plug.
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.
o If engine does not start: Crank engine for 6 seconds. Leave
ignition switched ON.
Accessing
The engine control module (ECM) fault memory can only be
accessed using diagnostic equipment connected to the data
link connector (DLC).
NOTE: Brown or white data link connector (DLC) terminal 1 is not
connected to ECM terminal 11.
Erasing
Ensure ignition switched OFF.
Disconnect ECM multi-plug or battery earth lead.
NOTE: ECM adaptive memory may be erased causing erratic
running faults. Carry out road test to allow ECM to
re-learn basic values.
Diagnostic equipment can also be used to erase data from
ECM fault memory.
WARNING: Disconnecting the battery may erase memory from
electronic units (e.g. radio, clock).
Trouble code identification
type
4-digit
I
0000 I End of test sequence -
1111
1231
Fault location
Engine control module (ECM)
Vehicle speed sensor (VSS)
Probable cause
1232 I Idle speed control (ISC) actuator I Wiring, multi-plug incorrectly wired, ISC actuator
2113 I Crankshaft position (CKP) sensor I Insecure rotor, wiring, CKP sensor
2121 1
Closed throttle position (CTP) switch
2212
2234
Throttle position (TP) sensor
Engine control module (ECM) - supply voltage
ECM
Wiring, speedometer, VSS
Accelerator cable adjustment, CTP switch
adjustment, wiring, CTP switch
Wiring, poor connection, TP sensor
Battery, wiring
2312 I Engine coolant temperature (ECT) sensor I Wiring, poor connection, ECT sensor