Check valve broken, code thrown, related?
10-25-2014, 05:53 PM
#1
Racer
Thread Starter
Check valve broken, code thrown, related?
My car wasn't starting on the first try so I hooked up a fuel gauge and found out that it was not holding fuel pressure after the car was turned off. Which made it seem like the check valve is bad, I have not replaced it. Now it is throwing code P0171 H - Fuel trim system lean bank 1, are the two related? Is it okay to drive it as is?
10-25-2014, 08:12 PM
#2
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CI 6,7,8,9,11 Vet
St. Jude Donor '08
My car wasn't starting on the first try so I hooked up a fuel gauge and found out that it was not holding fuel pressure after the car was turned off. Which made it seem like the check valve is bad, I have not replaced it. Now it is throwing code P0171 H - Fuel trim system lean bank 1, are the two related? Is it okay to drive it as is?
Bill
10-25-2014, 09:34 PM
#3
Drifting
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St. Jude Donor '14
P0171 is probably a vacuum or air leak. Check the pcv system and MAF connections. I had to replace the check valve in my 2000, it's tricky. Be careful not to kink the plastic lines!