Discussion Starter · #1 ·
Hello all. a while ago my car threw the common p018C code for low side fuel pressure issues. After reading the forums I performed this replacement myself when I got the code on my 2015.5 v60 drive E at 125,000 miles. After the repair everything worked great. After 3 days I noticed a 500rpm surge at idle and then the car threw code p0171 for lean mixture in cylinder 1. Now it will sometimes rev to 2500rpm at idle and is very concerning. I just swapped out the fuel lines and plugged the new sensor in. Of course a lean mixture and high rev says vacuum leak to me but I think it’s too much of a coincidence that it started after fuel line and sensor replacement. Has anyone had this issue before?