Check Engine Light, No Code

[Mudderoy]

The kids told me that the 99 XJ had a check engine light. I scanned it twice, NO CODES!

Reset the CEL and we'll wait for it to come back.

Anyone else had this problem? What did the issue turn out to be?

[slvmart]

To my knowledge, there are codes that can be set, that regular code readers will not read. You would need the manufacturers diagnostics to read those out, or aftermarket alternative. I don't know if it applies, but ABS and SRS codes are not included in many readily available code readers. These are usually referred to as the "Enhanced" codes. I used to have the AutoTap version of computer software to read these for all US manufacturers. However, they no longer support that software.