What does code U0681 mean?

DTC codes / U06xx · Network communication / U0681

U0681Lost Communication With Throttle/Pedal Position Sensor/Switch D

U0681 is a generic network communication code indicating that a control module on the vehicle's Controller Area Network (CAN) bus has lost contact with the throttle or pedal position sensor or switch designated 'D'. The computer detected that expected messages from that sensor or switch stopped arriving within the required time window, which can disable throttle response or trigger limp mode.

SystemNetwork

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaNetwork communication

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