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?
P018C DIY complication.
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Yes. 100 percent could be and I’m going to check for air leaks. If anyone has a good technique for finding one that isn’t dousing the engine in brake cleaner I would love to hear it. But I have a feeling it’s related to replacing the low pressure fuel hose.
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I doubt if changing the LPFPS has anything to do with the lean code.
Since it is accompanied by a variation in idle that points to the oil trap because when those go bad they will often set an Idle speed too high DTC at the same time.
Better way to find intake air leaks than spraying brake clean? Yes, the current method is by using a smoke machine but those are probably out of reach for the average DIY'r and won't show an internal PCV leak anyway.
When the PCV leaks you can check for excessive crankcase vacuum by pulling the oil cap with the engine running. If the cap is hard to remove or gets sucked back down easily it's leaking internally.
Since it is accompanied by a variation in idle that points to the oil trap because when those go bad they will often set an Idle speed too high DTC at the same time.
Better way to find intake air leaks than spraying brake clean? Yes, the current method is by using a smoke machine but those are probably out of reach for the average DIY'r and won't show an internal PCV leak anyway.
When the PCV leaks you can check for excessive crankcase vacuum by pulling the oil cap with the engine running. If the cap is hard to remove or gets sucked back down easily it's leaking internally.
Super helpful. I appreciate it!
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I am having to do this same repair on my 2015.5 V60 T5 Drive E. I have not found any videos showing how to get to it. How did you find where to locate it and what to remove? Thanks!
2015 Volvo V60 Oil Trap. Crankcase Ventilation. ENG 1966051. Engine - 32140004 - Genuine Volvo Part
Oil Trap. Crankcase Ventilation. ENG 1966051. Engine. 2015 Volvo V60. Genuine Volvo Part - 32140004 (32242753)
usparts.volvocars.com
First link is an excellent walk through of the repair. Second should be the OEM part (please double check your make and model)
I did my repair just as the guy in the video did and have had no issues since. Make sure to follow his torque specifications. Good luck!!
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Thanks so much!!!
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Just to confirm, I am getting the
Just to confirm, I am getting the p018C code, and you feel that replacing the breather box is the final solution. You did not need the Bosch part 0 261 230 238?
I’m not a mechanic. My car threw a low fuel pressure code so I replaced the fuel rail assembly. It worked for two days and then threw me the p018C code. After some research, I found that video and replaced my breather box. Once I took the breather box off, I found a rip in my gasket and general destruction on the interior of the part. My symptoms were high idle and the check engine light with that code. If you are curious, you can pop the breather cap and see if you have a tear in your diaphragm.
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Good idea!! I am not a mechanic either, and O’Reilly said the other part was what I needed, but I can’t find that part anywhere in the engine, so I am thinking that maybe that was a mistake on their part.
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Just checked and there was no tear in the diaphragm.
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That part number is for a 5 cylinder fuel pressure sensor. Is your engine a 4 or a 5 cylinder?
On 4 cylinder engines the sensor very different. It is mounted on the inlet side of the high pressure fuel pump which is mounted on the brake vacuum pump on the transmission side of the head.
Volvo has extended the warranty on the low pressure fuel pressure sensor for early 4 cylinder engines. A letter was mailed to the owner's of effected models.
To be more specific. No I did not need the Bosh part you listed. Issue was only a vacuum leak and not a sensor issue at all.
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