The control module stopped receiving expected network messages from the Charge Air Cooler Coolant Pump B node on the vehicle communication bus.
TuningBot DTC Database · v4.37.14
U01BC Lost Communication With Charge Air Cooler Coolant Pump B
Generic (OBD-II) interpretation in the TuningBot DTC database.
What U01BC means
Related and nearby codes
How to read U01BC
Network: communication between control units.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about U01BC
What does U01BC mean?
Lost Communication With Charge Air Cooler Coolant Pump B. The control module stopped receiving expected network messages from the Charge Air Cooler Coolant Pump B node on the vehicle communication bus.
Is U01BC generic or manufacturer-specific?
U01BC is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove U01BC at file level?
Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether U01BC is removable in your case.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
