P0452
#1
P0452
I have this code on my 2000 silverado. It comes back as fuel pressure sensor but I replaced it already. Originally a scan tool wouldnt erase the code. Then the code went out and came back after a few drive cycles. I was able to erase the code this time with a scan tool but it did come back again.
What should I do now?
What should I do now?
#2
Po452
Check the wires to the sensor, you should have a 5 volt reference wire and a ground wire plus a signal wire. use a DMM and back probe the wires with the key on engine off. If you don't get any voltage then you have to check for a bad ground wire.
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