Aug 6, 2021 · Audi B9 S4 Problems. Misfires: Injectors, coil packs, and spark plugs. Water Pump/Thermostat Failure. PCV Valve Failure. Carbon build-up. Deteriorating bushings. 1. Engine Misfires: Ignition coil/coil pack failure. Ignition coils seem to be are a common problem with a lot of vehicle engines nowadays.
Everything about A4 B7 (3rd Generation) in one place. See how B7 (3rd Generation) Audi A4 changed after facelift. All common problems you need to know before buying a second hand 2006-2009 Audi A4
Dec 16, 2018 · P0300 is a generic OBDII code that can occur with the Audi A4. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire, the. 221 201 5 100 376 456 263 190