2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 506

The electronic analysis system for the O2 sensor in the engine control unit is defective. (P0607)

Possible cause:

- Test control unit.

Affected functions:

- Engine diagnosis

- Exhaust system

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Test 1: Test control unit.

1. Test control unit.

Test control unit.

Possible cause and remedy

- Erase fault memory and start engine.

- Reread fault memory of control unit N3/10 (ME-SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME-SFI [ME] control

unit).

Read coding and transfer to the new control unit.End of test

0440

Heating of component G3/3 (Left O2 sensor, before TWC [KAT]) : Heating capacity is too low. (P0155)

Possible cause:

- 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.

0441

Heating of component G3/4 (Right O2 sensor, before TWC [KAT]) : Short circuit to positive (P0032)

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.