I replaced the A/C high pressure switch.

 

I also beleive the fuel tank pressure sensor is on the same circuit as well.

 

Hi there.
You where right the first time. The A/C pressure sensor was bad.
I checked for the bad code, and then I replaced the sensor, and checked again, in a short period of time (10 minutes).
And it is wrong. The bad A/C sensor caused the ECM (computer) to get hot, and I needed to let it cool down of for an hour before checking it again. The resistance between terminal #1 and 3# on the bad sensor was 8 ohms, and on the good sensor the resistant is very high.
Thank you for your help. You are a real Pro.

Simon

 

No problem anytime.

Im glad I could help.