What does code U0136 mean?

Q: What does code U0136 mean?

Lost Communication with Park Brake Module B. U0136 is a network communication code indicating that the primary control module has lost the controller area network (CAN) messages it expects from the park brake module, designated as module B. The computer has detected a sustained absence of the periodic status frames that the park brake module normally broadcasts, which can be caused by a power, ground, or data bus fault rather than a failed module.

DTC codes / U01xx · Lost communication with a control module / U0136

U0136Lost Communication with Park Brake Module B

U0136 is a network communication code indicating that the primary control module has lost the controller area network (CAN) messages it expects from the park brake module, designated as module B. The computer has detected a sustained absence of the periodic status frames that the park brake module normally broadcasts, which can be caused by a power, ground, or data bus fault rather than a failed module.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaLost communication with a control module

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.