Mercedes Benz

P0041 O2 sensors downstream TWC : Plug connections of the O2 sensors are wrongly connected. (P0041) Possible cause: ­ Check assignment of plug connections to O2 sensors. Affected functions: ­ Engine diagnosis ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ Test 1: Plug connections of the O2 sensors are wrongly connected. 1. Plug connections of the O2 sensors are wrongly connected. Possible cause and remedy ­ Test plug connections. End of test