Possible causes – Dirty Oil– Engine mechanical problems– Faulty camshaft position sensor– Faulty crankshaft position sensor– Timing belt jumped Symptoms – Engine Light ON (or Service Engine Soon Warning Light) AUDI Related P0016 code 2009 AUDI A4 Electrical System:starter Assembly:solenoid 2009 AUDI A5 Electrical System:starter Assembly:solenoid 2009 AUDI Q5 Electrical System:starter Assembly:solenoid