P0490 AUDI Exhaust Gas Recirculation Throttle Control Circuit A Circuit High

Possible causes

– Faulty Exhaust Gas Recirculation (EGR) Solenoid
– Exhaust Gas Recirculation (EGR) Solenoid harness is open or shorted
– Exhaust Gas Recirculation (EGR) Solenoid circuit poor electrical connection

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0490 AUDI OBD Code Description

The Engine Control Module (ECM) does not detect voltage on the Exhaust Gas Recirculation (EGR) Solenoid circuit.