What does code U0628 mean?

Q: What does code U0628 mean?

Lost Communication With A/C Refrigerant Pressure Sensor B. U0628 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 A/C refrigerant pressure sensor B circuit. The module that monitors this sensor, typically the climate control module or powertrain control module, has stopped receiving valid pressure data over the communication network, so it sets this code and may disable the air conditioning compressor to protect the system.

DTC codes / U06xx · Network communication / U0628

U0628Lost Communication With A/C Refrigerant Pressure Sensor B

U0628 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 A/C refrigerant pressure sensor B circuit. The module that monitors this sensor, typically the climate control module or powertrain control module, has stopped receiving valid pressure data over the communication network, so it sets this code and may disable the air conditioning compressor to protect the system.

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.