2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 507

0442

Heating of component G3/4 (Right O2 sensor, before TWC [KAT]) : Short circuit to ground (P0031)

Possible cause:

- G3/4 (Right O2 sensor, before TWC [KAT])

Affected functions:

- Engine diagnosis

- Exhaust system

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Test 1: Check component G3/4 (Right O2 sensor, before TWC [KAT]).

1. Check component G3/4 (Right O2 sensor, before TWC [KAT]).

Warning!Communication with ECU required.

0443

Heating of component G3/4 (Right O2 sensor, before TWC [KAT]) : Open circuit (P0030)

Test 1: Power supply

Test 2: Check component G3/4 (Right O2 sensor, before TWC [KAT]).

Test 3: Check component G3/4 (Right O2 sensor, before TWC [KAT]).

Test 4: Possible cause:

- G3/4 (Right O2 sensor, before TWC [KAT])

- Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)

Affected functions:

- Engine diagnosis

- Exhaust system

1. Power supply

Voltage supply via component Z7/36 (Circuit 87 M2e connector sleeve)

Possible cause and remedy

- Check voltage supply according to wiring diagram.

2. Check component G3/4 (Right O2 sensor, before TWC [KAT]).

Warning!Communication with ECU required.

3. Check component G3/4 (Right O2 sensor, before TWC [KAT]).

Warning!Communication with ECU required.

4. No further information available.

0445

Heating of component G3/3 (Left O2 sensor, before TWC [KAT]) : Short circuit to positive (P0052)