Possible causes – Faulty EVAP Canister Purge Regulator Valve– EVAP Canister Purge Regulator Valve harness is open or shorted– EVAP Canister Purge Regulator Valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1426 AUDI OBD Code Description Evaporative Emissions (EVAP) canister purge regulator valve in tank venting system…