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 Combo Engine Codes P0087 and P15DF

 Created by: Jag72blue
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 Posted: Jan 20, 2020 05:17AM
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Good to know you got it fixed, and under warranty!

 Posted: Jan 16, 2020 06:04PM
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I took it to the dealer and it was the high pressure fuel pump. Although the car was out of the factory warranty, the high pressure fuel pump is covered for 100k miles. They replaced it and gave me a rent a car. Car ran much better after wards and no issue since. Good luck. 

 Posted: Jan 16, 2020 04:52PM
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Did you ever fix the problem? I'm having the same Issue.

 Posted: Aug 17, 2018 02:49PM
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Quote:
Originally Posted by Jag72blue
I just hit 60k on my 2012 Mini Cooper S and I decided to change the fuel filter. Prior to that I was randomly getting codes of misfire detected at the cylinders(P0305)(P0300)(P0301)(P0303), this was happening over a 6 month period. I noticed it did it more frequently if I got on the gas pedal. After dealing with this for 6 months I decided to change the fuel filter. Which was pretty dirty. After that, the car ran so much better and had much more horse power, at least that's what I thought. Shortly within a day or two it started giving me a combo of codes(P0087) and (P15DF). Was it because I had some restriction of gas flow going through the fuel filter, and now that its clean the fuel pump can't keep up with the flow. Could this be a HPFP going out? Any thoughts before I bring this to the dealer.  
I've heard HPFP and carbon deposits may cause these errors.  Here is the BMW test / service plan:

P0087:  The fault is recognized when the relative rail pressure during engine operation is > 40 bar and a mixture fault or a fuel high-pressure fault is present at the same time.

Potential problem source(s):
- Defect in wiring harness between DME and rail-pressure sensor
- Defective rail-pressure sensor 
- Defect in high-pressure system
- Defective DME

Repair procedures:
- Check wiring harness between DME and rail-pressure sensor
- Replace rail-pressure sensor
- Repair problem in high-pressure fuel system
- Replace DME

P15DF:  Fuel high-pressure system, cold start: pressure too low.  The fault is recognized when the pressure level in the high-pressure system is 3.5 bar lower than the specified value.

Potential problem source(s):
- Fuel tank empty
- Defective rail-pressure sensor
- Defect in low-pressure system
- High-pressure pump defective

Repair procedures:
- Check rail-pressure sensor
- Replace rail-pressure sensor
- Check low-pressure sensor
- Check operation of fuel pump
- Replace high-pressure pump

 Posted: Aug 17, 2018 02:00PM
Total posts: 2
Last post: Jan 16, 2020
Member since:Aug 17, 2018
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I just hit 60k on my 2012 Mini Cooper S and I decided to change the fuel filter. Prior to that I was randomly getting codes of misfire detected at the cylinders(P0305)(P0300)(P0301)(P0303), this was happening over a 6 month period. I noticed it did it more frequently if I got on the gas pedal. After dealing with this for 6 months I decided to change the fuel filter. Which was pretty dirty. After that, the car ran so much better and had much more horse power, at least that's what I thought. Shortly within a day or two it started giving me a combo of codes(P0087) and (P15DF). Was it because I had some restriction of gas flow going through the fuel filter, and now that its clean the fuel pump can't keep up with the flow. Could this be a HPFP going out? Any thoughts before I bring this to the dealer.