Home >> Audi >> 2016 >> A4 Premium Plus >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 2.0L - Cylinder Head & VALVETRAIN - Engine Code(S): CAEB, CAED, CPMA & CPMB (Sedan) >> 15 Cylinder Head, VALVETRAIN >> VALVETRAIN >> Overview - VALVETRAIN >> Overview - Valve Train, 1.8L Engine >> Cylinder Head Cover, Loosening