BMW DTC U1156 – Message Monitoring Transmission Data2 Alive Check
DTC U1156 meaning on BMW
The DTC U1156 code on a BMW refers to ¨Message Monitoring Transmission Data2 Alive Check.¨ This diagnostic trouble code indicates that there is a communication issue related to monitoring the transmission data on the vehicle.
BMW DTC U1156 symptoms
Symptoms of the BMW DTC U1156 code may include:
- Check Engine Light illuminated on the dashboard
- Transmission shifting issues
- Reduced vehicle performance
BMW DTC U1156 causes
Common causes of the BMW DTC U1156 code include:
- Faulty transmission control module
- Wiring or connection issues in the transmission system
- Software glitches in the vehicle’s communication network
BMW DTC U1156 seriousness
The DTC U1156 code should be addressed promptly as it can lead to transmission malfunctions and potentially affect the overall drivability of the vehicle. Ignoring this code may result in further damage to the transmission system.
How to diagnose DTC U1156 on BMW
To diagnose the DTC U1156 code on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the specific fault codes stored in the vehicle’s computer
- Inspect the transmission control module and related wiring for any visible damage or corrosion
- Check for loose connections or faulty sensors in the transmission system
How to fix DTC U1156 on BMW
Depending on the root cause of the DTC U1156 code, potential fixes may include:
- Replacing the faulty transmission control module
- Repairing or replacing damaged wiring or connectors in the transmission system
- Updating the vehicle’s software to address communication issues
How to erase DTC U1156 on BMW
To clear the DTC U1156 code on a BMW, the following steps can be taken:
- Use a diagnostic scanner to access the vehicle’s onboard computer system
- Select the option to clear the fault codes stored in the system
- Follow the prompts on the scanner to erase the DTC U1156 code
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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