What does code U02AA mean?

Q: What does code U02AA mean?

Lost Communication With Engine Disconnect Clutch. U02AA is a network communication code indicating that a control module on the vehicle's Controller Area Network (CAN) bus has lost contact with the Engine Disconnect Clutch module or its associated control circuit. The computer detected a missing or intermittent response from the clutch actuator or its dedicated control module over the communication network, often after a specified number of failed handshake attempts.

DTC codes / U02xx · Lost communication with a control module / U02AA

U02AALost Communication With Engine Disconnect Clutch

U02AA is a network communication code indicating that a control module on the vehicle's Controller Area Network (CAN) bus has lost contact with the Engine Disconnect Clutch module or its associated control circuit. The computer detected a missing or intermittent response from the clutch actuator or its dedicated control module over the communication network, often after a specified number of failed handshake attempts.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.