U0140 on MINI
Lost Communication with BCM
U0140 on MINI vehicles indicates lost communication with bcm. Au7o has documented this code across 1 MINI model — most commonly on Clubman. U0140 is a network communication code meaning a module has lost communication with the body control module (BCM) over the vehicle's data bus. The BCM oversees many body and convenience functions — lighting, door locks, windows, wipers, anti-theft, and gateway communications — so losing contact with it can cause a wide range of seemingly unrelated electrical problems and warning lights. This is typically a wiring, connector, power/ground, or bus fault, or a failure of the BCM itself. Because the BCM often acts as a communication hub, this code can appear alongside other 'lost communication' codes. Typical repair costs on MINI range from $600 to $1,600, depending on the specific model and root cause.
Common Causes of U0140
- •Loss of power or ground to the BCM
- •CAN/data bus wiring damage, short, or open circuit
- •Corroded, loose, or damaged BCM connectors
- •Blown fuse feeding the BCM
- •Failed body control module
- •Water intrusion or corrosion in the harness
- •Another module faulting the shared data bus
U0140 on MINI by Model
MINI Clubman(1 issue)
- Footwell Control Module (FRM) Corrosion Short and Interior Fire (R55) - NHTSA Recall 23V3370002008-2014
The FRM (Footwell/Body control) module sits low in the driver's footwell on the R55. Blocked sunroof drains and road salt let water reach the module, corroding the circuit board and causing a short circuit. Symptoms range from erratic lighting, dead windows, and dead brake lights to the module melting down and setting the car's interior on fire. NHTSA campaign 23V337000 covers 2008-2014 MINI Clubman Cooper/Cooper S/JCW sold or ever registered in salt-belt states and DC. Multiple NHTSA complaints describe owners waiting well over a year for the remedy, and at least two describe the car being destroyed by fire that started in the driver's footwell.
Looking for U0140 on a different make?
View U0140 across all makes →Frequently Asked Questions
What does U0140 mean on MINI?▼
U0140 stands for "Lost Communication with BCM." U0140 is a network communication code meaning a module has lost communication with the body control module (BCM) over the vehicle's data bus. The BCM oversees many body and convenience functions — lighting, door locks, windows, wipers, anti-theft, and gateway communications — so losing contact with it can cause a wide range of seemingly unrelated electrical problems and warning lights. This is typically a wiring, connector, power/ground, or bus fault, or a failure of the BCM itself. Because the BCM often acts as a communication hub, this code can appear alongside other 'lost communication' codes. On MINI specifically, this code is documented across 1 model.
What causes U0140 on MINI vehicles?▼
Common causes on MINI: Loss of power or ground to the BCM, CAN/data bus wiring damage, short, or open circuit, Corroded, loose, or damaged BCM connectors, Blown fuse feeding the BCM, Failed body control module. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix U0140 on a MINI?▼
Repair costs on MINI range from $600 to $1,600, depending on the specific model and root cause.
Which MINI models have U0140 documented?▼
Au7o has documented U0140 on 1 MINI model: Clubman.