Audi A4 Problem Report
Audi A4 Maintain fuel quality to avoid misfires and CEL illumination
Fuel quality must be maintained to avoid engine misfire problems; the misfires may cause the Check Engine Light to illuminate.
When this first happened the codes that came up were P0300, P0301, P0303, P0304 and P0116. The...
An ignition coil or spark plug may fail unexpectedly resulting in an engine misfire and possibl...
what could cause this because I service it on time