DTC codes / U06xx · Network communication / U0692
U0692 is a network communication fault indicating that a control module on the vehicle's Controller Area Network (CAN) bus has lost contact with Exhaust Pressure Sensor B, which is typically a differential pressure sensor used to monitor the diesel particulate filter. The module that monitors this sensor has stopped receiving valid data messages from it over the communication bus, so it flags the sensor as offline rather than reporting an out-of-range pressure reading.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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