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Code P18D6?

Tiny
BHAMDOC1973
  • MEMBER
  • 2013 BMW 328XI
  • 4 CYL
  • TURBO
  • 4WD
  • AUTOMATIC
  • 148,000 MILES
I cannot find anywhere what this code is for. A friend of mine was driving and then lost all gears, deleted the code and still, car goes forward when in reverse or neutral. Initially it slowed him down and lost power then the drivetrain malfunction came on.
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Thursday, March 23rd, 2023 AT 4:17 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
The P18D6 code is related to a fault in the hydraulic pressure control unit of the transmission. Here is how to change it out in the images below. Please let us know if you need anything else to get the problem fixed.
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Friday, March 24th, 2023 AT 11:00 AM
Tiny
BHAMDOC1973
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  • 1,574 POSTS
Thanks. Is it possible it's low on fluid and not able to hold pressure?
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Friday, March 24th, 2023 AT 11:02 AM
Tiny
KEN L
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  • 47,643 POSTS
Yes, that is possible, I would check the fluid and see if it is low. Check the instructions below to see how to check and add fluid. Check out the images (below). Please let us know what you find.
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Sunday, March 26th, 2023 AT 12:25 PM

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