U0302
Software Incompatibility with TCM
2006-2011 BMW 325i 3.0L I6 N52 🇩🇪
High SeverityNetwork
Description
The data from the Transmission Control Module is incompatible or corrupted.
Symptoms
- Transmission shift problems
- Harsh shifting
- Check Engine Light
- Transmission warning light
Common Causes
- TCM software mismatch
- TCM programming incomplete
- Wrong TCM calibration
- TCM-ECM version conflict
Diagnostic Steps
- Check TCM software version
- Compare ECM and TCM software compatibility
- Reprogram TCM
- Check for TSBs
- Verify correct calibration file
Repair Notes
Reprogram TCM with correct calibration that matches the ECM software version.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0302 on Other Vehicles
Common Questions
What does code U0302 mean on a 2006-2011 BMW 325i?
U0302 stands for "Software Incompatibility with TCM". The data from the Transmission Control Module is incompatible or corrupted.
What are the symptoms of U0302 on a BMW 325i?
Common symptoms of U0302 include: Transmission shift problems, Harsh shifting, Check Engine Light, Transmission warning light.
What causes U0302 on a 2006-2011 BMW 325i?
Common causes of U0302 include: TCM software mismatch, TCM programming incomplete, Wrong TCM calibration, TCM-ECM version conflict.