BMW DTC U1202 – Message Monitoring TCM Alive Check
DTC U1202 meaning on BMW
The DTC U1202 code on a BMW refers to the Message Monitoring Transmission Control Module (TCM) Alive Check. This diagnostic trouble code indicates that the TCM is not communicating properly or has stopped sending signals to the vehicle’s main computer system.
BMW DTC U1202 symptoms
Symptoms of the DTC U1202 code on a BMW may include:
- Transmission shifting issues
- Engine stalling
- Reduced fuel efficiency
- Illuminated check engine light
BMW DTC U1202 causes
Common causes of the DTC U1202 code on a BMW include:
- Faulty TCM
- Wiring or connection issues between the TCM and main computer
- Software glitches
BMW DTC U1202 seriousness
The DTC U1202 code should not be ignored as it can lead to potential transmission and engine problems. Ignoring this code may result in further damage to the vehicle and could compromise safety.
How to diagnose DTC U1202 on BMW
To diagnose the DTC U1202 code on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the specific fault codes
- Inspect the TCM and related wiring for any visible damage
- Perform a communication test between the TCM and main computer
How to fix DTC U1202 on BMW
To fix the DTC U1202 code on a BMW, the following steps may be taken:
- Repair or replace any damaged wiring or connections
- Update the TCM software if necessary
- Replace the TCM if it is found to be faulty
How to erase DTC U1202 on BMW
To erase the DTC U1202 code on a BMW, a mechanic can:
- Use a diagnostic scanner to clear the fault codes
- After fixing the underlying issue, perform a test drive to ensure the code does not return