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

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Model: 3 SerieslCompact (E36) 3 Series (E46) 520i (E34)<br />

5 Series (E39) 7 Series (E38) 23<br />

Engine management<br />

Scanner<br />

type<br />

150<br />

t<br />

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

Probable cause<br />

-<br />

Fuel system leak detection pump motor -<br />

leak detected<br />

Mass air flow (MAF) sensorlthrottle valve -<br />

plausibility<br />

Heated oxygen sensor (H02S) 1, bank 1 - Wiring, connector(s), H02S<br />

high voltage<br />

-<br />

Hose(s), fuel system leak detection pump motor<br />

Wiring, connector(s), MAF sensor, throttle control unit1<br />

throttle valve, ECM<br />

151 Heated oxygen sensor (H02S) 1, bank 1 - Wiring, connector(s), H02S<br />

low voltage<br />

155<br />

Heated oxygen sensor (H02S) 1, bank 1 -<br />

no signal<br />

Heated oxygen sensor (H02S) 1, bank 2 -<br />

high voltage<br />

Heated oxygen sensor (H02S) 1, bank 2 -<br />

low voltage<br />

Heated oxygen sensor (H02S) 1, bank 2 -<br />

no signal<br />

Wiring, connector(s), H02S<br />

Wiring, connector(s), H02S<br />

Wiring, connector(s), H02S<br />

Wiring, connector(s), H02S<br />

156 Heated oxygen sensor (H02S) 2, bank 1 - Wiring, connector(s), H02S<br />

high voltage<br />

157<br />

Heated oxygen sensor (H02S) 2, bank 1 -<br />

low voltage<br />

Wiring, connector(s), H02S<br />

159 Heated oxygen sensor (H02S) 2, bank 2 - Wiring, connector(s), H02S<br />

high voltage<br />

170<br />

171<br />

172<br />

173<br />

174<br />

175<br />

186<br />

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

low voltage<br />

Engine coolant thermostat - mechanical fault<br />

Throttle control unit - malfunction<br />

Engine control module (ECM)lthrottle control<br />

unit - plausibility<br />

Throttle control unit - plausibility<br />

Throttle control unitlaccelerator pedal position<br />

(APP) sensor 112 - circuit malfunction<br />

Throttle control unitlthrottle position (TP)<br />

sensor 112 - circuit malfunction<br />

Throttle control unitlthrottle position (TP)<br />

sensor 112 - circuit malfunction<br />

Throttle control unitlthrottle position (TP)<br />

sensor 112 - malfunction<br />

Throttle control unit - malfunction<br />

Throttle control unitlaccelerator pedal position<br />

(APP) sensor 2 - malfunction<br />

Heated oxygen sensor (H02S) 1, bank 1 -<br />

malfunction<br />

Wiring, connector(s), H02S<br />

Engine coolant thermostat<br />

Wiring, connector(s), mechanical fault, throttle control unit,<br />

ECM<br />

Wiring, connector(s), mechanical fault, throttle control unit,<br />

ECM<br />

Wiring, connector(s), throttle control unit, ECM<br />

Wiring short to earthlpositive, connector(s), throttle control<br />

unit, ECM<br />

Wiring short to earthlpositive, connector(s), throttle control<br />

unit, ECM<br />

Wiring short to earthlpositive, connector(s), throttle control<br />

unit, ECM<br />

Wiring, connector(s), throttle control unit, ECM<br />

Wiring, connectorjs), throttle control unit, ECM<br />

Wiring, connector(s), throttle control unit, ECM<br />

Wiring, connector(s), H02S<br />

187 Heated oxygen sensor (H02S) 1, bank 2 - Wiring, connector(s), H02S<br />

malfunction<br />

Heated oxygen sensor (H02S) 1, bank 1 - Wiring, connector(s), H02S<br />

rangelperformance problem<br />

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

Engine management 173

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