chevyman1981

hello this is on a 2001 suburban the codes i have are po 452 po 453 how do i fix the codes any help would be nice ty bobby

EinST

Those are for the fuel tank pressure sensor circuit. The first is when it reads < 0.1V and the second, > 4.9V. I wonder how both codes got set at the same time.

hicksvilleshick

PO452-EVAP system pressure sensor signal low.

P0453 Evaporative emissions control vent circuit.

I'd be listening to your fuel tank extra close. might have vent stuck or something. PS I just googled the codes and found them in forums so I think they would apply to a suburban as well.


:chug:

73shark

Try searching the forum for these codes. There may be some other posts w/ answers.

in2pro

Codes don't always point to the exact problem, and as EinST pointed out they can even be misleading. I would clear the codes and see what comes back...

chevyman1981

well i had no luck with the suburban so i took it to a grage lets see wht they say i will let you know wht i fide out