2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1328

- G3/3 (Left O2 sensor, before TWC [KAT])

Affected functions:

- Engine diagnosis

- Exhaust system

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Test 1: Check component G3/3 (Left O2 sensor, before TWC [KAT]).

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

Warning!Communication with ECU required.

2225

The left fuel level sensor has a short circuit to positive.

Possible cause:

- N10/2 (Rear SAM control unit with fuse and relay module)

- Check the CAN communication with control unit A1 (Instrument cluster).

- Interior CAN bus

Affected functions:

- Fuel level indicator

- Engine running

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Test 1: Interior CAN bus

Test 2: CAN communication is faulty.

Test 3: Check component N10 (SAM control unit).

1. Interior CAN bus

Warning!Communication with ECU required.

2. CAN communication is faulty.

Test 2.1: Check the CAN communication with control unit A1 (Instrument cluster).

2.1. Check the CAN communication with control unit A1 (Instrument cluster).

Test 2.1.1: Check the CAN communication with control unit.

2.1.1. Check the CAN communication with control unit.

Warning!Communication with ECU required.

3. Check component N10 (SAM control unit).

Possible cause and remedy

- Read out fault memory of control unit N10/2 (Rear SAM control unit with fuse and relay module).

End of test

2216

Check component Y3/8s1 (Selection range sensor (VGS)). The adaptation sequence occurred outside the valid range.

Possible cause:

- Y3/8s1 (Selection range sensor (VGS))