P1889 on MINI
Transmission Adaptive Pressure Performance
P1889 on MINI vehicles indicates transmission adaptive pressure performance. Au7o has documented this code across 1 MINI model — most commonly on Countryman. This is a manufacturer-specific code tied to adaptive pressure control performance in the drivetrain, where a control module monitors a pressure-regulating system and the adaptive values it learns over time. The module compares actual pressure against what it commanded and sets this code when performance stays outside the expected range despite the system trying to adapt. Depending on the make and platform it can relate to automatic transmission line pressure or, on some Ford/Volvo-family AWD vehicles, the all-wheel-drive coupling oil pump and its pressure sensor. Because the exact meaning varies by manufacturer, the affected system should be confirmed with make-specific service information before repairs. Typical repair costs on MINI range from $300 to $2,500, depending on the specific model and root cause.
Common Causes of P1889
- •Faulty pressure or temperature sensor in the affected system
- •Worn or weak fluid pump not building proper pressure
- •Low or contaminated fluid
- •Internal hydraulic leak or wear reducing pressure
- •Wiring or connector fault in the sensor/solenoid circuit
- •Adaptive values out of range needing a relearn
- •Faulty control module for the affected system
P1889 on MINI by Model
MINI Countryman(1 issue)
- ALL4 AWD System Coupling and Transfer Case Issues2011-2025
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.
Looking for P1889 on a different make?
View P1889 across all makes →Frequently Asked Questions
What does P1889 mean on MINI?▼
P1889 stands for "Transmission Adaptive Pressure Performance." This is a manufacturer-specific code tied to adaptive pressure control performance in the drivetrain, where a control module monitors a pressure-regulating system and the adaptive values it learns over time. The module compares actual pressure against what it commanded and sets this code when performance stays outside the expected range despite the system trying to adapt. Depending on the make and platform it can relate to automatic transmission line pressure or, on some Ford/Volvo-family AWD vehicles, the all-wheel-drive coupling oil pump and its pressure sensor. Because the exact meaning varies by manufacturer, the affected system should be confirmed with make-specific service information before repairs. On MINI specifically, this code is documented across 1 model.
What causes P1889 on MINI vehicles?▼
Common causes on MINI: Faulty pressure or temperature sensor in the affected system, Worn or weak fluid pump not building proper pressure, Low or contaminated fluid, Internal hydraulic leak or wear reducing pressure, Wiring or connector fault in the sensor/solenoid circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1889 on a MINI?▼
Repair costs on MINI range from $300 to $2,500, depending on the specific model and root cause.
Which MINI models have P1889 documented?▼
Au7o has documented P1889 on 1 MINI model: Countryman.