P0411 Diagnostic Trouble Code Discussion for February 2004
Secondary AIR System Incorrect Airflow Detected
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| Help Request | Posted | |
| 1996 Volkswagen Jetta GL 2.0L MIL Lamp on VIN: 3VWWB81HXT P0411: Secondary Air inj. system incorrect flow detected. ... european problem. This VW has P0411. I followed alldata procedure for this code and finally came to checking combi valve.As it says, " open the valve by vacuum pump on Idle and listen to obvious change in noise" This test fail, but instead of simpl... |
February 16, 2004 | |
| 2000 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWMA23B1Y P0411: Secondary Air Injection incorrect flow. ... to help. Afer retrieving codes (P0411), we found a hole in the adapter that holds the combo valve for the air inj. system onto the back of the head. The valve also was bad. Replaced the parts, reset and tested, code came back on. Upon further inspection, f... |
February 25, 2004 |
