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Mini Cooper S F55 Fault Codes

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Silverzedtom
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Mini Cooper S F55 Fault Codes

Post by Silverzedtom » Sun Oct 04, 2020 6:40 pm

Hi all,

Bit of a long shot but I thought I’d see if anyone has experienced these codes before, either on their mini or perhaps with another model BMW.

Long story short when I put my foot down and get to about 4K RPM the check engine light flashes amber and the idrive says: ‘drivetrain malfunction. drive slowly and contact service.’ The car then runs like a bag of nails until switched off. Once switched off and on again the cars fine until accelerating above 4K.

Sounds like injectors to me? Car will be going to Mini ASAP, but it’s always nice to have an idea if possible.

The car is a 2016 Cooper S (petrol)
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E85 2.5si
F55 Cooper S

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Ewazix
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Mini Cooper S F55 Fault Codes

Post by Ewazix » Sun Oct 04, 2020 7:45 pm

It's good to get the simple cheap-to-fix basics out of the way, I'd be eliminating a simple air intake pipe leak/split as they can be intermittent and self clearing. They play havoc with sensors causing 'limp mode' in a way that can be mistaken for cam sensor or injector issues.
2003 2.5 SE, low miles, Sterling Grey, 108's & Eagles, no stubby here! Unmolested.
2018 Cooper S Countryman
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Silverzedtom
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Mini Cooper S F55 Fault Codes

Post by Silverzedtom » Mon Oct 05, 2020 9:40 pm

Ewazix wrote: Sun Oct 04, 2020 7:45 pm It's good to get the simple cheap-to-fix basics out of the way, I'd be eliminating a simple air intake pipe leak/split as they can be intermittent and self clearing. They play havoc with sensors causing 'limp mode' in a way that can be mistaken for cam sensor or injector issues.
thanks for the suggestion. I was thinking along the same lines RE hoses and did have a brief look but couldn’t see anything obvious. It’s off to an Indy Thursday so hopefully that will shed some light :)
E85 2.5si
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Ewazix
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Mini Cooper S F55 Fault Codes

Post by Ewazix » Mon Oct 05, 2020 11:06 pm

Silverzedtom wrote: Mon Oct 05, 2020 9:40 pm
Ewazix wrote: Sun Oct 04, 2020 7:45 pm It's good to get the simple cheap-to-fix basics out of the way, I'd be eliminating a simple air intake pipe leak/split as they can be intermittent and self clearing. They play havoc with sensors causing 'limp mode' in a way that can be mistaken for cam sensor or injector issues.
thanks for the suggestion. I was thinking along the same lines RE hoses and did have a brief look but couldn’t see anything obvious. It’s off to an Indy Thursday so hopefully that will shed some light :)
Good luck, keep us posted :thumbsup:
2003 2.5 SE, low miles, Sterling Grey, 108's & Eagles, no stubby here! Unmolested.
2018 Cooper S Countryman
Fiesta Ecoboost

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Mini Cooper S F55 Fault Codes

Post by ph001 » Mon Oct 05, 2020 11:18 pm

Well if it was an N54 it would have high pressure fuel pump problem written all over it. Does it run direct injection do you know?
2007 E85 Z4 3.0Si manual :driving:
19" CSL's | Eibach Springs | Aeroskirts | Z4M front bumper | Clear brake light | ZHP | RCH+| Stubby

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Mini Cooper S F55 Fault Codes

Post by Silverzedtom » Mon Nov 16, 2020 10:37 am

Apologies - To be honest I forgot I’d posted about this on here. The engine is a B48. I took the car to a specialist who swapped a coil pack and spark plug from cylinder 4 to one of the others, they took it home to give it a decent test drive afterwards and the fault just won’t return even a month on. Part of me wonders if it was some sort of glitch rather than a mechanical fault.
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Mini Cooper S F55 Fault Codes

Post by Ewazix » Mon Nov 16, 2020 12:26 pm

Glad it's sorted, it sounds like coil packs will be your first port of call if it happens again. Intermittent faults are a pain, it's much better when something just packs up :)

I had that generation of Cooper S and reliability was not great TBH, I PX'd it just before the warranty ended having had a HP Fuel pump, cam chain adjuster, oil leak and de-coke all done under warranty. The interior rattled like a bag 'o nails as well. Shame really as it was great fun to drive and very quick.
2003 2.5 SE, low miles, Sterling Grey, 108's & Eagles, no stubby here! Unmolested.
2018 Cooper S Countryman
Fiesta Ecoboost

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