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

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~ -<br />

EOBD trouble code table<br />

code<br />

PO430<br />

PO431<br />

PO432<br />

Catalytic converter, wiring, H02S 2<br />

PO433 Heated catalytic converter, bank 2 - efficiency below I Catalytic converter, wiring, H02S 2<br />

1 threshold<br />

Heated catalytic converter, bank 2 - temperature below Catalytic converter, wiring, H02S 2<br />

1 threshold<br />

Catalytic converter temperature sensor, bank 2<br />

PO436<br />

PO437<br />

PO438<br />

PO439<br />

PO440<br />

PO441<br />

PO442<br />

PO443<br />

PO445<br />

PO446<br />

PO447<br />

PO448<br />

PO456<br />

I<br />

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

Catalytic converter system, bank 2 - efficiency below<br />

threshold<br />

Warm up catalytic converter, bank 2 - efficiency below<br />

threshold<br />

Main catalytic converter, bank 2 - efficiency below<br />

threshold<br />

Catalytic converter temperature sensor, bank 2 -<br />

rangelperformance<br />

Catalytic converter temperature sensor, bank 2 - low input<br />

Catalytic converter temperature sensor, bank 2 -<br />

high input<br />

Catalytic converter heater, bank 2 - control circuit<br />

malfunction<br />

Evaporative emission (EVAP) system - malfunction<br />

Evaporative emission (EVAP) system - incorrect flow<br />

detected<br />

Evaporative emission (EVAP) system - small leak<br />

detected<br />

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

circuit malfunction<br />

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

1 open circuit<br />

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

short circuit<br />

I<br />

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

circuit malfunction<br />

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

open circuit<br />

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

short circuit<br />

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

circuit malfunction<br />

Evaporative emission (EVAP) pressure sensor -<br />

circuit malfunction<br />

Evaporative emission (EVAP) pressure sensor -<br />

rangelperformance problem<br />

Evaporative em~ssion (EVAP) pressure sensor - low input<br />

Evaporative emission (EVAP) pressure sensor -<br />

high input<br />

Evaporative emission (EVAP) pressure sensor -<br />

circuit intermittent<br />

Evaporative emission (EVAP) system - large leak<br />

detected<br />

Evaporative emission (EVAP) system - very small teak<br />

detected<br />

Evaporative emission (EVAP) system - leak detected<br />

(filler cao loose/offl<br />

Probable cause<br />

Catalytic converter, wiring, H02S 2<br />

Catalytic converter, wiring, H02S 2<br />

Wiring, poor connection, catalytic converter<br />

temperature sensor, ECM<br />

Wiring, poor connection, catalytic converter<br />

temperature sensor<br />

Wiring short to earth, catalytic converter temperature<br />

sensor, ECM<br />

Wiring short to positive, catalytic converter<br />

temperature sensor, ECM<br />

Wiring, relay, ECM<br />

Hose connection(s), intake leak, EVAP canister purge<br />

valve<br />

Hose connection(s), intake leak, EVAP canister purge<br />

valve<br />

Hose connection(s), intake leak, EVAP canister,<br />

EVAP canister purge valve<br />

Wiring, EVAP canister purge valve, ECM<br />

Wiring open circuit, EVAP canister purge valve, ECM<br />

Wiring short circuit, EVAP canister purge valve, ECM<br />

Wiring, EVAP canister purge valve, ECM<br />

Wiring open circuit, EVAP canister purge valve, ECM<br />

Wiring short circuit, EVAP canister purge valve, ECM<br />

Wiring, EVAP canister purge valve, ECM<br />

Wiring, EVAP pressure sensor, ECM<br />

EVAP pressure sensor<br />

Wiring short to earth, EVAP pressure sensor, ECM<br />

Wiring short to positive, EVAP pressure sensor, ECM<br />

Wiring, poor connection, EVAP pressure sensor, ECM<br />

Hose connection(s), intake leak, EVAP canister,<br />

EVAP canister purge valve<br />

Mechanical fault, hose connection(s),<br />

EVAP pressure sensor<br />

Mechanical fault, hose connection(s), EVAP pressure<br />

1 sensor

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