Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition
BMW Model: 3 SerieslCompact (E36) 3 Series (E46) 520i (E34) 5 Series (E39) 7 Series (E38) 23 I Engine management I Scanner type 45 Fault location Steering wheel multifunction switch - incorrect signal 46 I Fuel level signal 49 I Battery voltage - too low Injector, cyl. 2 - circuit malfunction MS42: Evaporative emission (EVAP) canister purge valve - malfunction 51 MS41: Evaporative emission (EVAP) canister purge valve - malfunction Evaporative emission (EVAP) canister purge valve - malfunction Probable cause Wiring, spiral cable, steering wheel multifunction switch, ECM Fuel level low, wiring, fuel gauge tank sensor Wiring, alternator, battery Wiring, injector Wiring, connector(s), EVAP canister purge valve Wiring, connector(s), EVAP canister purge valve Wiring, connector(s), EVAP canister purge valve 52 1 Fuel pump relay - malfunction Wiring, connector(s), fuel pump relay 55 MS42: Exhaust gas control solenoid - malfunction MS41: Exhaust gas control solenoid - malfunction Wiring, connector, exhaust gas control solenoid Wiring, connector, exhaust gas control solenoid ( Oxygen sensor heater - circuit malfunction Wiring, connector, H02S MS42: Idle air control (IAC) valve - circuit malfunction MS41: Idle speed control (ISC) actuatortidle air control (IAC) valve - malfunction I Oxygen sensor heater 2 - circuit malfunction MS42: Oxygen sensor heater 1, bank 2 - circuit malfunction Ignition signal resistor - defective Knock sensor (KS) 1 - defective Wiring, connector, IAC valve -- Wiring, connector(~), l~~?&.tuatorll~~ valve, ECM Wiring, connector, engine control relay, H02S, ECM Wiring, connector, engine control relay, HOZS, ECM Wiring, ignition signal resistor Wiring, connector, KS incorrectly tightened, KS 59 I Knock sensor (KS) 2 - defective Wiring, connector, KS incorrectly tightened, KS MS42: Oxygen sensor heater 2, bank 2 - circuit malfunction Ignition circuit - secondary circuit MS42: Secondary air injection (AIR) solenoid - defective MS41: Secondary air injection (AIR) solenoid - defective I Knock sensor (KS) 2 - defective Wiring, connector, engine control relay, H02S, ECM Wiring, ignition coil(s) Wiring, connector, AIR solenoid Wiring, connector, AIR solenoid Wiring, connector, KS incorrectly tightened, KS 64 1 Knock sensor (KS) 1 - defective Wiring, connector, KS incorrectly tightened, KS Camshaft position (CMP) sensor - circuit Wiring, connector, CMP sensor MS42: Camshaft position (CMP) sensor 1 - circuit malfunction Mass air flow (MAF) sensor/volume air flow (VAF) sensor - incorrect signal MS42: Evaporative emission (EVAP) canister purge valve - electrical fault Wiring, connector, CMP sensor Wiring, connector(s), MAF sensorNAF sensor Wiring, connector, EVAP canister purge valve
I I P I I Model: 3 SerieslCompact (E36) 3 Series (E46) 520i (E34) 5 Series (E39) 7 Series (E38) 23 Engine management Scanner type Fault location MS41: Evaporative emission (EVAP) canister purge valve - electrical fault MS40142: Fuel pump relay - malfunction AC compressor clutch relay - malfunction Heated oxygen sensor (H02S) - circuit malfunction MS41: Heated oxygen sensor (H02S) 1 - circuit malfunction Heated oxygen sensor (H02S) 2 - circuit malfunction Throttle position (TP) sensor - defective Crankshaft position (CKP) sensodengine speed (RPM) sensor - incorrectho signal MS42: Oxygen sensor heater 2, bank 1 - circuit malfunction Engine control module (ECM)/ABS control module communication, ASR system Engine coolant temperature (ECT) sensor - matfunction MS41: Engine control module (ECM)/ABS control module communication, ASR system Engine control module (ECM)/ABS control module communication, ASR system Crankshaft position (CKP) sensorlengine speed (RPM) sensor - circuit malfunction Camshafl position (CMP) sensor - range/ performance problem Intake air temperature (IAT) sensor - malfunction Evaporative emission (EVAP) canister purge valve - mechanical fault Idle speed control (ISC) actuatorlidte air control (IAC) valve - mechanical fault Heated oxygen sensor (H02S) - range/ performance problem Engine control module (ECM) - defective Camshaft position (CMP) actuator 1 - malfunction Camshafl position (CMP) actuator 2 - malfunction Camshaft position (CMP) actuator 1 - malfunction Camshaft position (CMP) actuator 2 - malfunction Throttle control unit - rangelperformance problem Probable cause Wiring, connector, EVAP canister purge valve Wiring, connector(s), fuel pump relay Wiring, AC compressor clutch relay Wiring, connector(s), H02S Wiring, connector(s), H02S, ECM Wiring, connector(s), H02S, ECM Wiring, connector(s), TP sensor I Wiring, CKP senior/~~~
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BMW<br />
Model: 3 SerieslCompact (E36) 3 Series (E46) 520i (E34)<br />
5 Series (E39) 7 Series (E38) 23<br />
I Engine management<br />
I<br />
Scanner<br />
type<br />
45<br />
<strong>Fault</strong> location<br />
Steering wheel multifunction switch -<br />
incorrect signal<br />
46 I Fuel level signal<br />
49 I Battery voltage - too low<br />
Injector, cyl. 2 - circuit malfunction<br />
MS42: Evaporative emission (EVAP) canister<br />
purge valve - malfunction<br />
51 MS41: Evaporative emission (EVAP) canister<br />
purge valve - malfunction<br />
Evaporative emission (EVAP) canister purge<br />
valve - malfunction<br />
Probable cause<br />
Wiring, spiral cable, steering wheel multifunction switch,<br />
ECM<br />
Fuel level low, wiring, fuel gauge tank sensor<br />
Wiring, alternator, battery<br />
Wiring, injector<br />
Wiring, connector(s), EVAP canister purge valve<br />
Wiring, connector(s), EVAP canister purge valve<br />
Wiring, connector(s), EVAP canister purge valve<br />
52 1 Fuel pump relay - malfunction Wiring, connector(s), fuel pump relay<br />
55<br />
MS42: Exhaust gas control solenoid -<br />
malfunction<br />
MS41: Exhaust gas control solenoid -<br />
malfunction<br />
Wiring, connector, exhaust gas control solenoid<br />
Wiring, connector, exhaust gas control solenoid<br />
( Oxygen sensor heater - circuit malfunction Wiring, connector, H02S<br />
MS42: Idle air control (IAC) valve - circuit<br />
malfunction<br />
MS41: Idle speed control (ISC) actuatortidle air<br />
control (IAC) valve - malfunction<br />
I Oxygen sensor heater 2 - circuit malfunction<br />
MS42: Oxygen sensor heater 1, bank 2 -<br />
circuit malfunction<br />
Ignition signal resistor - defective<br />
Knock sensor (KS) 1 - defective<br />
Wiring, connector, IAC valve<br />
--<br />
Wiring, connector(~), l~~?&.tuatorll~~ valve, ECM<br />
Wiring, connector, engine control relay, H02S, ECM<br />
Wiring, connector, engine control relay, HOZS, ECM<br />
Wiring, ignition signal resistor<br />
Wiring, connector, KS incorrectly tightened, KS<br />
59 I Knock sensor (KS) 2 - defective Wiring, connector, KS incorrectly tightened, KS<br />
MS42: Oxygen sensor heater 2, bank 2 -<br />
circuit malfunction<br />
Ignition circuit - secondary circuit<br />
MS42: Secondary air injection (AIR) solenoid -<br />
defective<br />
MS41: Secondary air injection (AIR) solenoid -<br />
defective<br />
I Knock sensor (KS) 2 - defective<br />
Wiring, connector, engine control relay, H02S, ECM<br />
Wiring, ignition coil(s)<br />
Wiring, connector, AIR solenoid<br />
Wiring, connector, AIR solenoid<br />
Wiring, connector, KS incorrectly tightened, KS<br />
64 1 Knock sensor (KS) 1 - defective Wiring, connector, KS incorrectly tightened, KS<br />
Camshaft position (CMP) sensor - circuit<br />
Wiring, connector, CMP sensor<br />
MS42: Camshaft position (CMP) sensor 1 -<br />
circuit malfunction<br />
Mass air flow (MAF) sensor/volume air flow<br />
(VAF) sensor - incorrect signal<br />
MS42: Evaporative emission (EVAP) canister<br />
purge valve - electrical fault<br />
Wiring, connector, CMP sensor<br />
Wiring, connector(s), MAF sensorNAF sensor<br />
Wiring, connector, EVAP canister purge valve
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