DTC U0129-87: Lost Communication with Brake System Control Module Missing Message [11/2023 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross and 2024 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC U0129-87)
- Read the DTCs.
Result
Result Proceed to DTC U0129-87 is output A DTC U0129-87 and other DTCs are output B HINT:
If any DTCs other than U0129-87 are output, troubleshoot those DTCs first.
Result:
A
GO TO CAN COMMUNICATION SYSTEM
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - 12/2024] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2024 - ]
Result:
B
GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ]
- Read the DTCs.