Question Anyone have ideas on why dash lights don’t go off with engine running . Just bought this at an auction. Runs real good. 2011 250 6.7 lariat xl. Thank

DaveBen · Apr 21, 2026

Check your PCM for error codes. Use a scanner to get the codes. This will tell you what the problem is. All WE can do is guess.

MilesHub · Apr 21, 2026

DaveBen said:
Check your PCM for error codes. Use a scanner to get the codes. This will tell you what the problem is. All WE can do is guess.

I checked and it was two codes both related to o2 sensor kinda thing. I’m just wondering has anyone heard of this or have any ideas? Thanks much

DaveBen · Apr 21, 2026

The O2 sensor code is common in these trucks. It is NOT telling the PCM if you have good fuel/air ratios. Do you see black smoke?

MilesHub · Apr 21, 2026

DaveBen said:
The O2 sensor code is common in these trucks. It is NOT telling the PCM if you have good fuel/air ratios. Do you see black smoke?

No smoke