Had an engine light. Read codes & found P0451: fuel tank pressure mismatch. Tried gas cap & looked for air leaks - no luck.

Watched video on how to test fuel tank pressure sensor. I decided to just swap it as the part is cheap compared to my time.

Had to drop the rear of the tank to reach the sensor but not too hard. New sensor installed & tank put back. The code cleared it self & no engine light for 10 weeks.