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EGR monitor not running
Posted to Emissions Forum on 8/29/2016 20 Replies

Friends,

It has been a long time since I posted a problem vehicle, but this one has me stymied. I thought I had it nailed when I found that the idle speed to run the EGR monitor (code P0404 and P1404 to be specific; P0401 runs and passes) has to remain withi... Login to read more.

20 Replies Received (View Replies)

 

car Vehicle Data

2002 Chevrolet Silverado 2500 HD 6.6L

1GCHC23102
Engine6.6 L
Trans5-speed Automatic (Electronic)

car Vehicle Data

2002 Chevrolet Silverado 2500 HD 6.6L

1GCHC23102
Engine6.6 L
Trans5-speed Automatic (Electronic)