Mercedes Benz

P2228 Sensor 'Ambient pressure' in control module Motor electronics (P2228) Possible cause: ­ N3/10 (ME­SFI [ME] control unit) Affected functions: ­ Engine diagnosis ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 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 (ME­SFI [ME] control unit).If fault reoccurs, replace component N3/10 (ME­SFI [ME] control unit). Read coding and transfer to the new control unit.End of test