P0411 Diagnostic Trouble Code Discussion for November 2018
Secondary AIR System Incorrect Airflow Detected
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| Help Request | Posted | |
| 2008 Cadillac DTS 4.6L MIL Lamp on VIN: 1G6KD57Y88 P0411: Secondary Injection Incorrect Flow. I have now inherited this car. Related history, new AIR solenoid valve, pull rear manifold and clean passages, reflash PCM. My test: BARO = 102 kpa, AIR pressure sensor = 103 kpa KOEO. AIR pump on/ Solenoid off = 124 kpa KOEO. AIR pump on/ Solenoid o... |
November 21, 2018 | |
| 2008 Cadillac DTS 4.6L MIL Lamp on VIN: 1G6KD57Y88 P0411: Secondary Injection Incorrect Flow. I have now inherited this car. Related history, new AIR solenoid valve, pull rear manifold and clean passages, reflash PCM. My test: BARO = 102 kpa, AIR pressure sensor = 103 kpa KOEO. AIR pump on/ Solenoid off = 124 kpa KOEO. AIR pump on/ Solenoid o... |
November 27, 2018 | |
| 2014 Chevrolet Impala LS 2.5L MIL Lamp on VIN: 2G11Y5SLXE P0411: Secondary AIR incorrect AIR flow detected. I get an occasional P0411 code. It takes a while for it to set. Car runs fine. I can command the pump to run with the scanner. It will drive the O2 S1 reading down to almost zero. I can hear the pump when it is commanded on. The way I understand this is th... |
November 27, 2018 |
