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

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1 :;:Ie Fautt Iocatiom<br />

PO161 Heated oxygen sensor (H02S) 2, bank 2, heater control -<br />

circuit malfunction<br />

PO162 Heated oxygen sensor (H02S) 3, bank 2 - circuit<br />

malfunction<br />

PO163<br />

Oxygen sensor (02s) 3, bank 2 - circuit malfunction<br />

Heated oxygen sensor (H02S) 3, bank 2 - low voltage<br />

Oxygen sensor (02s) 3, bank 2 - low voltage<br />

EOBD trouble code table I<br />

Probable cause<br />

Wiring, H02S, ECM<br />

Wiring, H02S, ECM<br />

Wiring, 02S, ECM<br />

Exhaust leak, wiring short to earth, H02S, ECM<br />

Exhaust leak, wiring short to earth, 02S, ECM<br />

PO164 I Heated oxygen sensor (H02S) 3, bank 2 - high voltage Wiring short to positive, H02S, ECM<br />

PO165<br />

Oxygen sensor (02s) 3, bank 2 - high voltage<br />

Heated oxygen sensor (H02S) 3, bank 2 - slow response<br />

Oxygen sensor (02s) 3, bank 2 - slow response<br />

PO166 Heated oxygen sensor (H02S) 3, bank 2 - no activity<br />

detected<br />

Oxygen sensor (02s) 3, bank 2 - no activity detected<br />

PO167 Heated oxygen sensor (H02S) 3, bank 2, heater control -<br />

circuit malfunction<br />

PO168<br />

PO1 69<br />

PO170<br />

I<br />

Fuel temperature too high<br />

Incorrect fuel composition<br />

Fuel trim (FT), bank 1 - malfunction<br />

PO171 System too lean, bank 1<br />

I<br />

PO172 System too rich, bank 1<br />

PO173<br />

I<br />

Fuel trim (FT), bank 2 - malfunction<br />

System too lean, bank 2<br />

PO175 I System too rich, bank 2<br />

PO176<br />

PO177<br />

PO178<br />

PO179<br />

PO180<br />

PO181<br />

PO182<br />

PO183<br />

PO184<br />

PO185<br />

PO186<br />

PO187<br />

PO188<br />

PO190<br />

PO191<br />

I Fuel composition sensor - circuit malfunction<br />

I<br />

Fuel composition sensor - rangelperformance problem<br />

Fuel composition sensor - low input<br />

Fuel composition sensor - high input<br />

Fuel temperature sensor A - circuit malfunction<br />

Fuel temperature sensor A - rangelperformance problem<br />

Fuel temperature sensor A - low input<br />

Fuel temperature sensor A - high input<br />

Fuel temperature sensor A - circuit intermittent<br />

Fuel temperature sensor B - circuit malfunction<br />

Fuel temperature sensor B - rangelperformance problem<br />

Fuel temperature sensor B - low input<br />

Fuel temperature sensor B - high input<br />

Fuel temperature sensor B - circuit intermittent<br />

I Fuel rail pressure (FRP) sensor - circuit malfunction<br />

Fuel rail pressure (FRP) sensor - rangelperformance<br />

problem<br />

Wiring short to positive, 02S, ECM<br />

Heating inoperative, wiring, H02S<br />

Wiring, 02s<br />

Wiring, H02S, ECM<br />

Wiring, 02S, ECM<br />

Wiring, H02S, ECM<br />

Wiring, fuel temperature sensor, mechanical fault<br />

Wiring, fuel composition sensor, mechanical fault<br />

lntake leak, AIR system, fuel pressurelpump,<br />

iniectorlsl. . ,, EVAP canister . Durae - valve. H02S<br />

Intakelexhaust leak. AIR svstem. MAFNAF sensor.<br />

fuel pressure/pum~, injectbr(s), H O~S<br />

lntake blocked, EVAP canister purge valve,<br />

fuel pressure, EGR system, injector(s), H02S<br />

lntake leak, AIR system, fuel pressurelpump,<br />

iniector(s), EVAP canister purge valve, H02S<br />

Intakelexhaust leak, fuel pressurelpump, injector(s),<br />

AIR svstem, hose connection(s~<br />

lntake blocked, EVAP canister purge valve,<br />

fuel Dressure. EGR svstem, iniectortsl. H02S<br />

. . , ..<br />

Wiring, fuel composition sensor, ECM<br />

Fuel composition sensor<br />

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

Wiring short topositive, fuel composition sensor,<br />

ECM<br />

Wiring, fuel temperature sensor, ECM<br />

Fuel temperature sensor<br />

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

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

wiring, poor connection: fuel temperature sensor,<br />

ECM<br />

Wiring, fuel temperature sensor, ECM<br />

Fuel temperature sensor<br />

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

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

Wiring, poor connection, fuel temperature sensor,<br />

ECM<br />

Wiring, fuel rail pressure sensor, ECM<br />

Wiring, FRP sensor<br />

[<strong>Autodata</strong><br />

EOBD trouble code table 1 65 1

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