P0452 - i'm stumped

[disco_drum]

I am getting p0452 (fuel tank pressure sensor) fault on my D2. I cannot for the life of me figure our why. I tried installing a spare fuel pump I have (sensor is built into pump) and still getting the code.

Nanocom reads as follows:
P0452
occurs during drive cylce c
signal too high

I can clear the code, but it immediately comes back.
Any ideas?

Could it be that a drive cycle MUST be completed before the code disappears even though I cleared them with my Nanocom?

Background.....finishing up a body swap. Its the last code. I put an 03 body on my 01. I kept all the 01 engine harnesses, ECU, BCM, etc and stuff. Not sure what would be throwing this code.

 

[boxster]

I am getting p0452 (fuel tank pressure sensor) fault on my D2. I cannot for the life of me figure our why. I tried installing a spare fuel pump I have (sensor is built into pump) and still getting the code. Any ideas?

Background.....finishing up a body swap. Its the last code. I put an 03 body on my 01. I kept all the 01 engine harnesses, ECU, BCM, etc and stuff. Not sure what would be throwing this code.

Maybe the fuel tank fill hose/ overflow clamps need to be tightened or fuel cap not sealing?

 

[1of40]

The ECU does take some cycles to relearn stuff. Maybe put some miles with short and long trips on it to see how things shake out.

 

[disco_drum]

I figured it out today. i performed some electrical wizardry after much studying in the RAVE manual. On connecter 4 (C0637) on the ECM i switch pin 12 to pin 14 and also switch pin 31 to pin 9. This got the correct signals to my fuel tank pressure sensor.

When I did the swap I kept all the engine harnesses and computers, but I did not keep the harness that lives within the dash and there laid the problem. The donor body was from a 03 with secondary air so I had to rewire to make my non-SAI engine and computer happy.

I am pumped (and quite proud of myself haha) and I will drive to the emissions place tomorrow (I live in metro Atlanta area) and get my tag!