Cel p11dc

My dealer did the same. The mechanic installed a nox sensor, the office help typed knock sensor in their computer. The service manager told me they replaced the "knock sensor". I questioned him that I thought it would be nox he said he didn't know.

LulzT1 said:

Car goes in tomorrow. Again. 6th time in only 18k miles !

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Well now I don't feel quite so annoyed ... got my 3rd CEL tonight, at 18,800 miles.

I'm already thinking I'd better get the extended warranty on this car when my 3 years is up from GM.

Barefeet said:

My dealer did the same. The mechanic installed a nox sensor, the office help typed knock sensor in their computer. The service manager told me they replaced the "knock sensor". I questioned him that I thought it would be nox he said he didn't know.

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As you and many others stated, service rep misunderstood. It was in fact a failed NOx sensor. Had it replaced under warranty. Maybe I'll make it more than 1k miles before the next CEL lol although I test drove a '14 sonic for the time being... Man did I miss my Cruze!

Zenturi said:

Well now I don't feel quite so annoyed ... got my 3rd CEL tonight, at 18,800 miles.

I'm already thinking I'd better get the extended warranty on this car when my 3 years is up from GM.

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I actually did get an extended warranty when I bought the car b/c I had a feeling being a first gen Cruze diesel in the U.S. I would run into problems. Didn't think I'd be a regular at the shop lol

Cruzator said:

Here ya go, Rev!

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Thanks - now to get on to the diagnosing.

Since this says it refers to NOX2, I know where to look, and I suspect it might have something to do with the repair I made to the Particulate Matter Sensor a couple months back. The two are right next to each other and their wires run back to the harness together. I didn't re-secure the wires after replacing the Particulate Matter Sensor, (the routing seemed safe without it) so perhaps something got pinched or the road vibration wore through the insulation and caused a short to ground.

Is the car safe to drive with this cel (p11dc) code?