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

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I Engine management<br />

Model: 80 1,612,O 1001A6 2,O<br />

VAG type<br />

5-digit<br />

00000<br />

<strong>Fault</strong> location 1 Probable cause<br />

No fault found -<br />

Vehicle speed sensor (VSS)<br />

I Wiring, speedometer, VSS<br />

Idle speed control (ISC) actuator<br />

I Wiring, multi-plug incorrectly wired, ISC actuator<br />

Crankshaft position (CKP) sensor<br />

Closed throttle position (CTP) switch<br />

Throttle position (TP) sensor<br />

Engine coolant temperature (ECT) sensor<br />

Intake air temperature (IAT) sensor<br />

Knock sensor (KS)<br />

Heated oxygen sensor (H02S)<br />

Engine control module (ECM) - supply voltage<br />

Heated oxygen sensor (H02S) - lambda control<br />

Heated oxygen sensor (H02S)<br />

Mixture control (MC)<br />

Idle speed control (ISC) actuator position sensor<br />

Engine control module (ECM) immobilizer active<br />

Engine control module (ECM)<br />

I<br />

Insecure rotor, wiring, CKP sensor<br />

Accelerator cable adjustment, CTP switch<br />

adjustment, wiring, CTP switch<br />

I Wiring, poor connection, TP sensor<br />

I Wiring, poor connection, ECT sensor<br />

Wiring, IAT sensor<br />

Wiring, KS<br />

I Wiring, H02S, heating inoperative, fuel level low<br />

I Battery, wiring<br />

Heating inoperative, exhaust leak, misfire,<br />

fuel pressurelpump, EVAP canister purge valve<br />

Wiring, H02S, heating inoperative, fuel level low<br />

Fuel level low, fuel pressurelpump, intakelexhaust<br />

leak, misfire, H02S, EVAP canister purge valve,<br />

injector, excessive fuel in engine oil<br />

Wiring, throttle valve, ISC actuator position sensor<br />

lncorrectldamaged key, incorrectly coded,<br />

ECMlimmobilizer replacement without coding,<br />

wiring, immobilizer defective<br />

ECM<br />

rn <strong>Trouble</strong> code may be displayed if engine is not idling during self-diagnosis due to missing CKP sensor signal. Ignore trouble code if<br />

engine starts.<br />

rn After repairs, erase learnt lambda control values: Wait 30 seconds. Disconnect battery or ECM multi-plug for at least 30 seconds.<br />

Carry out road test to allow ECM to re-learn basic values.<br />

4

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