Mercedes Benz

Misfiring of cylinder 3 : Worsening of exhaust emission values after engine start (P0303) Misfiring of cylinder 3 : Worsening of exhaust emission values after engine start (P0303) Possible cause: ­ T1/3 (ignition coil cylinder 3) ­ Y62y3 (Fuel injector cylinder 3) Affected functions: ­ ­ Engine diagnosis Engine running ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ Test 1: Check component T1/3 (ignition coil cylinder 3). Test 2: Check component Y62y3 (Fuel injector cylinder 3). 1. Check component T1/3 (ignition coil cylinder 3). Warning!Hazard as a result of high voltage at the ignition system!2010 Mercedes Benz E 63 AMG Sedan (212.077) V8­6.3L (156.985) Copyright ? 2013, ALLDATA 10.52SS Page 611 ­ Electronic ignition systems operate within a hazardous power range both at the low voltage side (primary circuit) as well as on the high voltage side (secondary circuit). ­ Contacts with such parts can result in burns, heart flutter or cardiac arrest. Rules of condu...