2002 Volkswagen Passat Q&A
2002 Volkswagen Passat Question: code p0411
Found online: Trouble Code: P0411 Secondary Air Injection System Upstream Flow Detected Possible Causes: Air pump output is blocked or restricted AIR bypass solenoid is leaking or it is restricted AIR bypass solenoid is stuck open or stuck closed Check valve (one or more) is damaged or leaking Electric air injection pump hose(s) leaking Electric air injection pump is damaged or faulty ECM has failed. - raiderron
just recieved code p0411 secondary air injection system incorrect flow detected. is car safe to drive and how to repair...