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

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1 EOBD trouble code table<br />

zIpd","le<br />

PO458<br />

PO459<br />

PO460<br />

PO461<br />

PO462<br />

PO463<br />

PO464<br />

PO465<br />

PO466<br />

PO467<br />

PO468<br />

PO469<br />

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

Evaporative emission (EVAP) system, EVAP valve -<br />

circuit low<br />

Evaporative emission (EVAP) system, EVAP valve -<br />

circuit hlgh<br />

Fuel tank level sensor - circuit malfunction<br />

Fuel tank level sensor - rangelperformance problem<br />

Fuel tank level sensor - low input<br />

Fuel tank level sensor - high input<br />

Fuel tank level sensor - circuit intermittent<br />

Evaporative emission (EVAP) canister purge flow sensor -<br />

circuit malfunction<br />

Evaporative emission (EVAP) canister purge flow sensor -<br />

rangelperformance problem<br />

Evaporative emission (EVAP) canister purge flow sensor -<br />

low input<br />

Evaporative emission (EVAP) canister purge flow sensor -<br />

high input<br />

Evaporative emission (EVAP) canister purge flow sensor -<br />

circuit intermittent<br />

Probable cause<br />

-<br />

Wiring short to earth, EVAP valve<br />

Wiring short to positive, EVAP valve<br />

Wiring, fuel tank level sensor, ECM<br />

Wiring, fuel tank level sensor<br />

Wiring short to earth, fuel tank level sensor, ECM<br />

Wiring short to positive, fuel tank level sensor, ECM<br />

Wiring, poor connection, fuel tank level sensor, ECM<br />

Wiring, EVAP canister purge flow sensor, ECM<br />

EVAP canister purge flow sensor<br />

Wiring short to earth, EVAP canister purge flow<br />

sensor, ECM<br />

Wiring short to positive, EVAP canister purge flow<br />

sensor, ECM<br />

PO470 Exhaust gas pressure sensor - circuit malfunction Wiring, exhaust gas pressure sensor, ECM<br />

PO471 Exhaust gas pressure sensoi' - rangelperformance I Exhaust gas pressure sensor<br />

1 problem<br />

PO472 Exhaust gas pressure sensor - low input<br />

Wiring short to earth, exhaust gas pressure sensor,<br />

ECM<br />

PO473<br />

PO474<br />

PO475<br />

PO476<br />

PO477<br />

PO479<br />

PO480<br />

1<br />

Exhaust gas pressure sensor - high input<br />

Exhaust gas pressure sensor - circuit intermittent<br />

Exhaust gas pressure control valve - circuit malfunction<br />

Exhaust gas pressure control valve - rangelperformance<br />

problem<br />

Exhaust gas pressure control valve - low input<br />

Exhaust gas pressure control valve - high input<br />

Exhaust gas pressure control valve - circuit intermittent<br />

Engine coolant blower motor 1 - circuit malfunction<br />

Wiring, poor connection, EVAP canister purge flow<br />

sensor, ECM<br />

Wiring short to positive, exhaust gas pressure sensor,<br />

ECM<br />

Wiring, poor connection, exhaust gas pressure<br />

sensor, ECM<br />

Wiring, exhaust gas pressure control valve, ECM<br />

Exhaust gas pressure control valve<br />

Wiring short to earth, exhaust gas pressure control<br />

valve, ECM<br />

Wiring short to positive, exhaust gas pressure control<br />

valve, ECM<br />

PO481 I Engine coolant blower motor 2 - circuit malfunction I Wiring, engine coolant blower motor, ECM<br />

PO482<br />

PO483<br />

PO484<br />

PO485<br />

PO486<br />

PO487<br />

PO488<br />

PO489<br />

I<br />

Engine coolant blower motor 3 - circuit malfunction<br />

Engine coolant blower motor, rationality check -<br />

malfunction<br />

Engine coolant blower motor - circuit over current<br />

Engine coolant blower motor, powerlearth - circuit<br />

malfunction<br />

Exhaust gas recirculation (EGR) valve position sensor B -<br />

circuit malfunction<br />

Exhaust gas recirculation (EGR) system, throttle position<br />

control - circuit malfunction<br />

Exhaust gas recirculation (EGR) system, throttle position<br />

control - rangelperformance<br />

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

Wiring, poor connection, exhaust gas pressure<br />

control valve, ECM<br />

Wiring, engine coolant blower motor, ECM<br />

Wiring, engine coolant blower motor, ECM<br />

Wiring, engine coolant blower motor, ECM<br />

Wiring, engine coolant blower motor, ECM<br />

Wiring, engine coolant blower motor, ECM<br />

Wiring, poor connection, EGR valve position sensor,<br />

ECM<br />

Wiring, poor connection, ECM<br />

Wiring, poor connection, ECM<br />

Wiring short to earth, EGR valve

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