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

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Model: Jetta 2.0 16V Passat 2,O 16V Corrado 2,O 16V<br />

VOLKSWAGEN<br />

VAG type<br />

5-digit<br />

<strong>Fault</strong> ioestlon<br />

Probable cause<br />

No fault found I -<br />

Vehicle speed sensor (VSS)<br />

Camshaft position (CMP) sensor, cylinder 4 HT lead<br />

Crankshaft position (CKP) sensor<br />

Closed throttle position (CTP) switch<br />

Wiring, speedometer, VSS<br />

- --<br />

CMP sensor tabs not facing towards distributor, spark<br />

plug(s), HT lead(s), distributor caplrotor, wiring,<br />

CMP sensor<br />

Wide open throttte (WOT) switch 1 Accelerator cable adjustment, wiring, WOT switch<br />

Volume air flow (VAF) sensor ( Wiring, VAF sensor<br />

Engine coolant temperature (ECT) sensor<br />

Knock sensor (KS) 1<br />

Heated oxygen sensor (H02S)<br />

Idle speed control<br />

Knock control - control limit exceeded<br />

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

Knock sensor (KS) 2<br />

Mixture control (MC) - mixture lean<br />

--<br />

Mixture control (MC) - mixture rich<br />

Mixture control (MC)<br />

Insecure rotor, wiring, CKP sensor, volume air flow<br />

(VAF) sensor plate tightlsticking<br />

Accelerator cable adjustment, CTP switch adjustment,<br />

throttle valve tightlsticking, wiring, CTP switch<br />

Wiring, poor connection, ECT sensor<br />

Wiring, KS, ECM<br />

I Wiring, H02S, heating inoperative<br />

Ignition timing, EVAP canister purge valve 112, intake<br />

leak, VAF sensor, throttle valve adjustment, AC signal<br />

missing, wiring<br />

Incorrect fuellcompression, ignition timing, screening<br />

of KS wiring, insecure engine component<br />

Mixture adjustment, H02S heaterlwiring, cold start<br />

injector, EVAP canister purge valve, intakelexhaust<br />

leak, ECM earth wire to intake manifold<br />

Wiring, KS, ECM<br />

Idle air control (IAC) valve ( Wiring, IAC valve, ECM<br />

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

Enqine control module (ECM)<br />

ECM earth wire to intake manifold, intake leak, idle<br />

speed adjustment<br />

Injector(s), cold start injector, idle speed adjustment<br />

ECM earth wire to intake manifold, intake leak, idle<br />

speed adjustment, injectorIs), cold start injector<br />

lncorrectldamaged key, incorrectly coded,<br />

ECMlimmobilizer replacement without coding, wiring,<br />

immobilizer defective<br />

I ECM

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