P2257 AUDI – Secondary Air Injection System Control ‘A’ Circuit Low

P2257 AUDI Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P2257 AUDI Possible Causes

Faulty Secondary Air Injection (AIR) Pump Relay,Secondary Air Injection (AIR) Pump Relay harness is open or shorted,Secondary Air Injection (AIR) Pump Relay circuit poor electrical connection,Faulty Secondary Air Injection (AIR) pump.,Faulty Secondary air injection (AIR) solenoid.

P2257 AUDI Description

Air is blown briefly into the exhaust valves by the Secondary Air Injection (AIR) System during a cold start. This produces an oxygen rich exhaust gas, causes after burning and reduces the heating-up phase of the catalytic converter.