P0016 code after long layup

MaxCollins

New Member
Original poster
Supporting Member
Joined
Sep 22, 2020
Messages
21
Location
Texas
I haven't been able to drive my LJ for 4 months because of shoulder surgery and waiting on the upholstery shop to return my drivers seat.

In the last couple of weeks I've finished the BL and MML install and put new tires on. The battery was dead so I disconnected it and put it on the charger for a few days. Other than that it has just been sitting in my shop for 4 months. It was running fine with no codes when I parked it.

I finally got my drivers seat back today and took it for a spin . . . had CEL and P0016 before I got to the end of the driveway. Seems to be running fine, maybe a little rough idle but not much worse than it was before. I only drove it for about a mile and returned home - there was a weird rattle that worried me which turned out to be a pair of vice grips in the engine bay that I had "lost" a couple of weeks ago :).

Is there anything I could have bumped during the MML/BL install that would cause this error code? Any chance it was caused by disconnecting the battery and it will eventually go away after I drive a little more? I'm not sure where to start troubleshooting.

Thanks, Max