P0401 Diagnostic Trouble Code Discussion for February 2007
Insufficient EGR Flow Detected
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| Help Request | Posted | |
| 2004 Pontiac Grand Am SE1 3.4L MIL Lamp on VIN: 1G2NF52E94 P0401: Insufficient EGR Flow Detected. one of my customers called me to fix this problem after another shop replaced egr valve with a new factory unit and also claimed to have cleaned egr ports. i can see a new plenum gasket which does tell me that they probably did. this code has come back everyti... |
February 10, 2007 | |
| 1995 Toyota Tacoma DLX 3.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4TAVN53F9S P0401: Insufficient EGR Flow Detected. This truck came from a car lot who traded it in so I know nothing about when the symptoms started or any repair history. The complaint is a misfire. It has a Check Engine light on with numerous codes. Having worked on these engines some in the past, I am aware... |
February 28, 2007 |
