2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 795

Possible cause of fault

- Leaks

Possible remedy

- Check entire exhaust system for leaks.

1050

Lambda control, before TWC left : Lambda control is at lean stop. (P0174)

Possible cause:

- Lambda control

Affected functions:

- Engine output

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Test 1: In connection with warranty and goodwill work, supplemental information on this symptom is available in TIPS.

Test 2: Check self-adaptation.

1. In connection with warranty and goodwill work, supplemental information on this symptom is available in TIPS.

1. No further information available.

2. Check self-adaptation.

Test 2.1: Check lambda control.

2.1. Check lambda control.

Test 2.1.1: Inspect air cleaner housing.

Test 2.1.2: Check component G3/3 (Left O2 sensor, before TWC [KAT]).

Test 2.1.3: Check component Y62 (Fuel injectors).

Test 2.1.4: Check exhaust system for leaks.

Test 2.1.5: Check component Y58/1 (Purge control valve).

Test 2.1.6: Check signal from component B2/5 (Hot film mass air flow sensor) via actual value.

Test 2.1.7: Check seal of component B2/5 (Hot film mass air flow sensor) with air filter for cracks.

2.1.1. Inspect air cleaner housing.

Possible cause and remedy

- Inspect air cleaner housing for correct installation.

Note

- Proper sealing between the air filter housing and the housing of the HFM mass air flow sensor must be guaranteed (the gasket surface must not