2001 Saturn SL2 EVAP code P0452

Return voltage to computer (green wire) was 1.5 with about 2 gallons in the tank and was 1.48 after filling the tank then driving about 40 miles. ( The tank is still basically full.

Voltage to grey wire maintained 4.98 regardless of time it was checked. Orange/black is still a good ground signal.

That sounds like the presure sensor is doing what it is suposed to. That to me indicates even more towards the computer. A computer is around $600 then I have to get it programed for the vin so I am sure that will be expensive. I will still plan on having somone hook it up to better equipment but I was hopping you would say the signals should be.1 at empty and 5 at full. I never get that lucky. Thanks for getting back to me on a saturday

I'm not going to throw a computer at it. I will have someone that can get live data to check it out before I do any more.

If it does need a computer I can get a junk yard one but still have to have someone flash it with the correct VIN and mileage. NJ inspection is now just a matter of type the vin into a computer and plug the OBD 2 port in. All sensors read good and the data matches, then you pass. Anything disagrees or fails you don't.

I just don't see how the computer could have coincidently gone bad at the same time a chunk of asphalt decided to jump up and dent a floor-pan, stretch a fuel line and snap a EVAP line. I don't doubt it, I just don't see how they are connected.