Air Pump Check Valve Replacement Cost
An air injection system trouble code isn't always triggered by a defective air pump check valve. It can also be triggered by a restricted passage or air pipe, a defective air pump, an air pump relay failure, or a wiring problem.
When replacing the air pump check valve, be sure to perform a thorough inspection of the air injection components and passages. Always use factory parts and check for any needed software updates for the power train control module (PCM).
When the air pump check valve is malfunctioning, the vehicle may perform normally, but may fail an emissions inspection and get poor gas mileage. The Check Engine Light may illuminate with a code set for the secondary air injection system.