DTC P0411 indicates the engine control unit (ECU) has detected an air flow problem within the secondary air injection system. Excessive carbon buildup within the air injection passages and/or disconnected or damaged air injection hose(s) will also trigger a P0411 trouble code.
How do I know if my air pump relay is bad?
5 Symptoms of a Bad Secondary Air Injection Pump
- 1) Check Engine Light.
- 2) Failed Emissions Test.
- 3) Weak Acceleration.
- 4) Engine Stalling.
- 5) Low Idle.
Can I drive with a bad air pump?
Repairing a bad air pump While failing a smog test is a serious enough problem, the real danger from a bad air pump is the possibility that reduced engine performance and driveability could cause be hazardous to your driving safety.
