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

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Model: C18012001200W22012301230W280 (202) E200122012801320 (124)<br />

E200123012801320 (210) S2801320 (140) SLK200 (170)<br />

MERCEDES-BENZ<br />

SL2801320 (129)<br />

Engine management<br />

3-digit type<br />

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

Probable cause<br />

024 1 Heated oxygen sensor (H02S) 1 - open circuit I Wiring, connector, H02S<br />

025<br />

Bosch HFM: Heated oxygen sensor (H02S) 1 -<br />

rangelperformance problem<br />

Siemens PMS: Oxygen sensor heater 1 - electrical fault<br />

Bosch HFM: Heated oxygen sensor (H02S) 2 - voltage<br />

026 ( high<br />

027<br />

I Siemens PMS: Oxygen sensor heater 1 -electrical fault (<br />

Bosch HFM: Heated oxygen sensor (H02S) 2 - open<br />

circuit<br />

Siemens PMS: Oxygen sensor heater 1 - electrical fault<br />

Wiring, connector, H02S<br />

Wiring, connector, H02S, ECM<br />

Wiring, connector, H02S<br />

Wiring, connector, H02S, ECM<br />

028 Bosch HFM: Heated oxygen sensor (H02S) 2 - I Wiring, connector, H02S<br />

rangelperformance problem<br />

029<br />

030<br />

031<br />

Siemens PMS: Lambda regulation - system too lean<br />

Bosch HFM: Oxygen sensor heater - current low<br />

Siemens PMS: Lambda regulation - system too rich<br />

Bosch HFM: Oxygen sensor heater - current high<br />

Siemens PMS: Injector 1 & 4 - circuit malfunction<br />

Bosch HFM: Oxygen sensor heater - short circuit<br />

Wiring, connector, H02S<br />

Wiring, connector, H02S, ECM<br />

( Siemens PMS: Injector 1 & 4 - circuit malfunction I Wiring, injector, ECM<br />

Wiring, intakelexhaust leak, MAF sensor, fuel<br />

pressure, injector(s), ECM<br />

Wiring, connector, H02S, ECM<br />

Wiring, intakelexhaust leak, MAF sensor, fuel<br />

pressure, injector(s), ECM<br />

Wiring, connector, H02S, ECM<br />

Wiring, injector, ECM<br />

Wiring, connector, H02S, ECM<br />

032 I Bosch HFM: Oxygen sensor heater 2 - current low I Wiring, connector, H02S, ECM<br />

033<br />

Siemens PMS: Injector 2 & 3 - circuit malfunction<br />

Bosch HFM: Oxygen sensor heater 2 - current high<br />

Siemens PMS: Injector 2 & 3 - circuit malfunction<br />

034 I Bosch HFM: Oxygen sensor heater 2 - short circuit I Wiring, connector, H02S, ECM<br />

Siemens PMS: Fuel trim (FT) - rangelperformance<br />

I problem<br />

035 Lambda regulation - system too lean<br />

036<br />

Lambda regulation - system too rich<br />

1<br />

037 Injector 1 - short to positive<br />

038<br />

Bosch HFM: Injector 1 - open circuiffshort to earth<br />

Siemens PMS: Ignition amplifierlignition coil,<br />

cylinder 1 & 4 - defective<br />

Wiring, injector, ECM<br />

Wiring, connector, H02S, ECM<br />

Wiring, injector, ECM<br />

lntakelexhaust leak, injector(s), fuel pressure,<br />

H02S, EVAP system, ECM<br />

Wiring, intakelexhaust leak, MAF sensor, fuel<br />

pressure, injector(s), ECM<br />

Wiring, intakelexhaust leak, MAF sensor, fuel<br />

pressure, injector(s), ECM<br />

039 I Bosch HFM: Injector 2 - short to positive I Wiring short to positive, injector, ECM<br />

Siemens PMS: lgnition amplifierlignition coil,<br />

cylinder 1 & 4 - defective<br />

Wiring short to positive, injector, ECM<br />

Wiring open circuitlshort to earth, injector, ECM<br />

Wiring, ignition amplifier, ignition coil, ECM<br />

Wiring, ignition amplifier, ignition coil, ECM<br />

040 I Bosch HFM: Injector 2 - open circuiffshort to earth 1 Wiring open circuitlshort to earth, injector, ECM<br />

Siemens PMS: Ignition amplifierlignition coil,<br />

cylinder 1 & 4 - defective<br />

041 Bosch HFM: Injector 3 - short to positive<br />

Siemens PMS: Ignition amplifierlignition coil,<br />

cylinder 2 & 3 - defective<br />

Wiring, ignition amplifier, ignition coil, ECM<br />

Wiring short to positive, injector, ECM<br />

Wiring, ignition amplifier, ignition coil, ECM

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