What does code U0690 mean?

Q: What does code U0690 mean?

Lost Communication With EGR Temperature Sensor D. U0690 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 exhaust gas recirculation (EGR) temperature sensor D. The module monitoring the sensor expected regular data messages but stopped receiving them within the required time window, so it flagged the missing communication rather than a temperature value that is out of range.

DTC codes / U06xx · Network communication / U0690

U0690Lost Communication With EGR Temperature Sensor D

U0690 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 exhaust gas recirculation (EGR) temperature sensor D. The module monitoring the sensor expected regular data messages but stopped receiving them within the required time window, so it flagged the missing communication rather than a temperature value that is out of range.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

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.