Heavy Duty 4B0927803F Front ABS Wheel Speed Sensor Fit FAW Audi A6 On FAW Audi A6 C5 (2000–2005) and imported A6/Allroad C5, front wheel speed sensors age badly: harness cracks near the hub, the magnetic tip picks up steel debris, and the ABS/EDL module starts seeing garbage wheel-speed data. Drivers see the ABS lamp stay on, speedometer drop to zero at low speed, or fault codes that clear with a scanner but return next cold morning. This sensor replaces OE 4B0927803F