When machine was plugged in to the car, code 00493 came up saying ESP Sensor unit G419 No signal/No communication with car. The sensor unit was replaced but the code still showing and wont be deleted, therefore the esp light is still on the dash. The Garage is now stumped. Any ideas ?
: Audi A4
: Saloon 2.0 TDI SE 4DR
Electrics, ECU, Warnings & Lights