G
Gsand31415
Guest
I bought my 6 cyl 2011 used with 114k miles with a CEL light lit and a NOx sensor code and naively assumed it would be a cheap fix (I previously drove Fords and for the most part did my own minor repairs and maintenance). After belated research, I had it professionally replaced and drove the next 6,000 miles without a problem.
Recently the CEL lit again with a P22A1 code and today while driving up a mountain pass suffered a dramatic loss of power. Wife was driving and I didn't have a full view of the dash but from my angle didn't see any additional lights or messages. Crawled off the freeway and hooked up the ScanGuageII and couldn't remember how to view codes, but did get a prompt to clear them, and not really thinking things through under pressure I hit "clear". The CEL light went out and it ran normally for the couple hundred miles to get us home.
My questions:
1. Were we in "Limp Home Mode? Is there a dash indicator or is that a diagnosis by symptom?
2. If it was in LHM, would a restart have been sufficient, or was the clearing of the code necessary?
3. Should I replace both NOx sensors with the latest generation (gen5, if I remember the posts)? I seem to remember that both need to be on the same generation.
4. I'm sure I can do the mechanical part of the replacement myself. Is there also programming needed that can only be done at the dealer/shop?
5. If it is a DIY job, where is a good place to buy the new sensors?
I feel like a dope for clearing without viewing the code(s).
p.s. Since I can't create new tags, where do I find the list of existing tags
Recently the CEL lit again with a P22A1 code and today while driving up a mountain pass suffered a dramatic loss of power. Wife was driving and I didn't have a full view of the dash but from my angle didn't see any additional lights or messages. Crawled off the freeway and hooked up the ScanGuageII and couldn't remember how to view codes, but did get a prompt to clear them, and not really thinking things through under pressure I hit "clear". The CEL light went out and it ran normally for the couple hundred miles to get us home.
My questions:
1. Were we in "Limp Home Mode? Is there a dash indicator or is that a diagnosis by symptom?
2. If it was in LHM, would a restart have been sufficient, or was the clearing of the code necessary?
3. Should I replace both NOx sensors with the latest generation (gen5, if I remember the posts)? I seem to remember that both need to be on the same generation.
4. I'm sure I can do the mechanical part of the replacement myself. Is there also programming needed that can only be done at the dealer/shop?
5. If it is a DIY job, where is a good place to buy the new sensors?
I feel like a dope for clearing without viewing the code(s).
p.s. Since I can't create new tags, where do I find the list of existing tags