P0411 Diagnostic Trouble Code Discussion for August 2011
Secondary AIR System Incorrect Airflow Detected
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| Help Request | Posted | |
| 1999 Audi A4 Quattro 2.8L Excessive Emissions, MIL Lamp on VIN: WAUED28D7X P0411: Secondary aire injection incorrect flow. Vehicle came in with P0411 secondary air flow incorrect. Had some failing vacuum lines so those and the vacuum solenoid were replaced. 6 weeks later the code came back and the combi valves were replaced. The air pump can be turned on manually and it appears to... |
August 05, 2011 |
