Heavy Duty 4E0927803 Front Left ABS Wheel Speed Sensor Fit Audi A6L VW Phaeton On an Audi A6 C6/C7 or a VW Phaeton, the wheel-speed sensors are tiny Hall-effect pick-ups pressed into the knuckle — no cable, just a 70 mm black body with a 2-pin plug. When the sensing face fouls or the plug oxidises, you get the ABS and ESP lamps, a speedo that flickers at low speed, and a wheel-speed code (often 00285 / 00287) that clears on scan and returns the next wet morning. 4E0927803 is