Home >> Audi >> 2006 >> A8 Quattro >> Repair and Diagnosis >> Engine Performance >> System >> 4.2L - Generic Scan Tool, Engine Code(S): BFM >> 28 - Ignition/Glow Plug System >> Camshaft Adjustment, Checking >> Camshaft Adjustment Valves, Checking >> Camshaft Adjustment Valves, Checking >> Wire Connection, Checking