Mercedes Benz

Mercedes-Benz Mercedes Benz OEM Parts Mercedes Benz OE Replacement Parts 0437 Heating of component G3/3 (Left O2 sensor, before TWC [KAT]) : Short circuit to positive / Resistance of sensor heater too low (P0155) Possible cause: - G3/3 (Left O2 sensor, before TWC [KAT]) Affected functions: - Engine diagnosis - Exhaust system ------------------------------------------------- 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. 0438 This fault can be ignored and erased. Possible cause: - This fault can be ignored and erased. Affected functions: - Engine diagnosis ------------------------------------------------- Test 1: This fault can be ignored and erased. 1. This fault can be ignored and erased. Note:This fault can be ignored and erased.