1998 Chevy with error code P0452

1998 Chevy (2wd) s-10 (Ls) 2.2L (Ln2) automatic (M30)

Hello All,

I'm getting a P0452 error code from the PCM. (fuel pressure sensor)

I bought a new gas cap. . ..

I would like to start with the vacuum system and run through all the hoses and check for cracks etc. . .

I went ahead and got an "alldata" subscription for the truck for just such a task but I cant get an image of the system that is
good enough for me to make out where all the vacuum lines go.
maybe someone can help me find a better diagram, or something.....

thanks all..........


The P0452 is for the FTP sensor. The code sets if the signal goes below a predetermined value. Check and make sure you don't also have a P1639, this would indicate that the 5v ref is shorted to ground or power and would need to be traced down 1st before diag'ing the P0452...

Or if you just put a fuel pump in it......Then you need to plug the senor back in.........

(Not that I've ever done that...........I've just heard that )
 

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In Reply To

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The P0452 is for the FTP sensor. The code sets if the signal goes below a predetermined value. Check and make sure you don't also have a P1639, this would indicate that the 5v ref is shorted to ground or power and would need to be traced down 1st before diag'ing the P0452...

Or if you just put a fuel pump in it......Then you need to plug the senor back in.........

(Not that I've ever done that...........I've just heard that )

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