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

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I Engine management<br />

I<br />

Erasing<br />

Switch ignition OFF.<br />

Remove bridge wire.<br />

Remove BACK UP fuse (7,5A) from underbonnet fusebox<br />

for 10 seconds minimum:<br />

F18A3, F20Z1, F20Z2, F22Z2, H23A3 - 0.<br />

0 F20B3, F22B5 - 0.<br />

Refit fuse.<br />

<strong>Trouble</strong> codes may also be erased by disconnecting battery<br />

lead.<br />

WARNING: Disconnecting BACK UP fuse or battery may erase<br />

memory from electronic units (e.g. radio, clock).<br />

Repeat checking procedure to ensure no data remains in<br />

ECM fault memory.<br />

<strong>Trouble</strong> code identification<br />

Flash type <strong>Fault</strong> locatlon Probable cause<br />

Heated oxygen sensor (H02S)loxygen sensor (02s)<br />

Manifold absolute pressure (MAP) sensor - circuit<br />

Engine speed (RPM) sensor<br />

Manifold absolute pressure (MAP) sensor - signal<br />

Engine coolant temperature (ECT) sensor<br />

Throttle position (TP) sensor<br />

Crankshaft position (CKP) sensor<br />

Camshaft position (CMP) sensor<br />

Intake air temperature (IAT) sensor<br />

Exhaust gas recirculation (EGR) system - control<br />

Barometric pressure (BARO) sensor<br />

Idle air control (IAC) valve - circuit<br />

Ignition amplifier - control circuit<br />

Vehicle speed sensor (VSS)<br />

Fuel pressurelpump, wiring short to earthlopen<br />

circuiffshort to positive, H02S102S, ECM<br />

I Wiring, supply voltage, MAP sensor, ECM<br />

Wiring, RPM sensor, ECM<br />

Intake leak, vacuum hose blocked, wiring, MAP<br />

sensor. ECM<br />

I Wiring short to earthlopen circuit, ECTsensor, ECM<br />

Wiring short to earthlopen circuit, TP sensor, ECM<br />

CKP sensor, wiring short to earthlopen circuit, ECM<br />

I CMP sensor, wiring short to earthlopen circuit, ECM<br />

I Wiring short to earthlopen circuit, IAT sensor, ECM<br />

Wiring, vacuum hose(s), EGR solenoid, EGR valve<br />

position sensor, EGR valve, ECM<br />

ECM<br />

Wiring, supply voltage, IAC valve, ECM<br />

I Wiring, supply voltage, ignition amplifier, ECM<br />

Wiring, VSS, ECM

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