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What does code p1222 fuel pump circuit voltage low mean


marka88
10-14-2005, 10:03 PM
Hello Everybody,
I the past week my truck pulled this code. The first time I went to start it after driving a while and it cranked for about 10 seconds and the check engine light came on. The second I was driving for about 1 1/2 hours and the truck jerked engine light came on again and engine stalled but started right up. I need help please. P1222 fuel pump voltage low.

marka88
10-14-2005, 10:16 PM
Sorry forgot,
I have a 94 s10 4x4 4.3tbi z

bigd7315
10-14-2005, 11:08 PM
replace your fuel pump or fuel pump relay and a new fuel filtewr would be a cheap start but it means low fuel pressure

marka88
11-23-2005, 02:17 PM
Sorry I forgot to reply. I believe it was the Fuel pump relay in the dash, I changed it later that weekend and have not had one problem. Thanks Mark :smile:

dmbrisket 51
11-24-2005, 12:01 AM
to your question: means either a the pump isnt getting enough electrical juce, or it isnt getting the signal back to the computer, check fuses, relays, and grounds b4 you drop the tank to change a pump

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