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

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EOBD trouble code table<br />

<strong>Trouble</strong><br />

code<br />

<strong>Fault</strong> location<br />

Cruise control system, actuator control -<br />

circuit range/performance<br />

Engine coolant blower motor speed sensor -<br />

circuit malfunction<br />

Engine coolant blower motor speed sensor -<br />

circuit rangelperformance<br />

Engine coolant blower motor speed sensor - no signal<br />

Engine coolant blower motor speed sensor -<br />

circuit intermittent<br />

AC refrigerant pressure sensor - circuit malfunction<br />

AC refrigerant pressure sensor - rangelperformance<br />

problem<br />

AC refrigerant pressure sensor - low input<br />

AC refrigerant pressure sensor - high input<br />

AC refrigerant charge loss<br />

AC evaporator temperature sensor - circuit malfunction<br />

AC evaporator temperature sensor -<br />

circuit ran~elperformance<br />

AC evaporator temperature sensor - circuit low<br />

AC evaporator temperature sensor - circuit high<br />

AC evaporator temperature sensor - circuit intermittent<br />

Probable cause<br />

Wiring, poor connection, cruise control actuator<br />

Wiring, poor connection, blower motor speed sensor,<br />

ECM<br />

Wiring, poor connection, blower motor speed sensor<br />

Wiring, poor connection, blower motor speed sensor,<br />

ECM<br />

Wiring, poor connection, ECM<br />

Wiring, AC refrigerant pressure sensor, ECM<br />

AC refrigerant pressure sensor<br />

AC refrigerant pressure too low (incorrectly charged),<br />

wiring, AC refrigerant pressure sensor, ECM<br />

AC refrigerant pressure too high<br />

(cooling fault/incorrectly charged), wiring,<br />

AC refrigerant pressure sensor, ECM<br />

AC leak, wiring, AC refrigerant pressure sensor<br />

Wiring, poor connection, AC evaporator temperature<br />

sensor, ECM<br />

Wiring, poor connection, AC evaporator temperature<br />

sensor, ECM<br />

Wiring short to earth, AC evaporator temperature<br />

sensor. ECM<br />

Wiring short to positive, AC evaporator temperature<br />

sensor, ECM<br />

Wiring, poor connection, AC evaporator temperature<br />

sensor, ECM<br />

Wiring, relay, intake air heater<br />

Wiring short to earth, intake air heater<br />

Wiring short to positive, intake air heater<br />

Wiring, intake air heater<br />

Wiring, EGRT sensor, ECM<br />

lntake air heater A - circuit malfunction<br />

lntake air heater A - circuit low<br />

lntake air heater A - circuit high<br />

lntake air heater A - circuit open<br />

Exhaust gas recirculation temperature (EGRT) sensor,<br />

bank 1 - circuit malfunction<br />

Exhaust gas recirculation temperature (EGRT) sensor, Wiring short to earth, EGRT sensor, ECM<br />

bank 1 -low input<br />

Exhaust gas recirculation temperature (EGRT) sensor, Wiring short to positive, EGRT sensor, ECM<br />

bank 1 - high input<br />

Exhaust gas temperature sensor, bank 2 sensor 1 - Wiring, poor connection, exhaust gas temperature<br />

circuit malfunction<br />

sensor, ECM<br />

Exhaust gas temperature sensor, bank 2 sensor 1 - Wiring short to earth, exhaust gas temperature<br />

circuit low<br />

sensor, ECM<br />

Exhaust gas temperature sensor, bank 2 sensor 1 - Wiring short to positive, exhaust gas temperature<br />

circuit high<br />

sensor, ECM<br />

Power steering pressure (PSP) sensorlswitch - Wiring, PSP sensor/switch, ECM<br />

circuit malfunction<br />

Power steering pressure (PSP) sensorlswitch -<br />

PAS system, PSP sensor/switch<br />

rangelperformance problem<br />

Power steering pressure (PSP) sensorlswitch - low input Wiring short to earth, PSP sensor/switch, ECM<br />

Power steering pressure (PSP) sensorlswitch - high inpul Wiring short to positive, PSP sensor/switch, ECM<br />

Power steering pressure (PSP) sensorlswitch - circuit Wiring, poor connection, PSP sensor/switch, ECM<br />

intermittent

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