P1890 on MINI: How to Diagnose & Fix
Transmission Adaptive Pressure Table Transfer
1 MINI model · 1 documented issue · $300-$2,500 repair
P1890 on MINI by model: symptoms, diagnosis and fix
The Countryman ALL4 AWD system uses a Haldex-type electromagnetic coupling that can fail due to fluid degradation or pump motor failure. The transfer case can also develop leaks and bearing noise.
Common Symptoms
- AWD warning light
- Grinding noise from undercarriage
- Vibration during turns
- Loss of AWD function
- Fluid leak from transfer case
How to Fix
Service the Haldex coupling fluid every 30k miles (often neglected). If pump has failed, replace the coupling unit. Transfer case leaks require seal replacement or unit replacement.
P1890 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P1890 mean on a MINI?
P1890 stands for "Transmission Adaptive Pressure Table Transfer." P1890 is a manufacturer-specific transmission code; on the applicable platform its official definition is 'Transmission Adaptive Pressure Table Transfer,' meaning the control module had a problem storing, transferring, or applying its learned adaptive shift-pressure values. Modern transmissions continuously 'learn' the line pressure needed for smooth shifts and store that data; this code sets when that adaptive learning data can't be properly transferred or is corrupted, often after a module replacement or programming event. On other makes P1890 can refer to different shift-control or CVT issues, so confirm against the specific vehicle. Symptoms typically include harsh, erratic, or poorly adapted shifting. On MINI it is documented across 1 model: Countryman.
What are the most common causes of P1890?
The most common causes of P1890 are: Transmission control module not relearned/reprogrammed after service, Corrupted or lost adaptive pressure learning data, Faulty or recently replaced TCM/PCM, Low system voltage interrupting module memory, Wiring or connector faults to the control module, Internal transmission wear preventing successful adaptation, Software calibration that needs updating. The specific cause varies by vehicle.
How much does it cost to fix P1890 on a MINI?
Published repair estimates on MINI range from $300 to $2,500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P1890 on a different make?
View P1890 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.