A good friend of mine has a 2005 Jeep Wrangler that keeps throwing O2 codes and the gas gauge is pegged at full. He had a shop replace the O2’s and the PCM.
It was fine for about 4 days and all the same things occurred, but now the gas gauge will peg from empty to full. Still runs fine though.
The shop said he had aftermarket O2’s in and that they fried the PCM even though he purchased it new and never replaced them.
Any ideas?? I’ll try to get the codes she is lighting up.