The control module detected that the signal in the Control Module Cooling Fan circuit stayed below the expected operating range.
TuningBot DTC Database · v4.37.14
U350D Control Module Cooling Fan Circuit Low
Generic (OBD-II) interpretation in the TuningBot DTC database.
What U350D means
Related and nearby codes
How to read U350D
Network: communication between control units.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about U350D
What does U350D mean?
Control Module Cooling Fan Circuit Low. The control module detected that the signal in the Control Module Cooling Fan circuit stayed below the expected operating range.
Is U350D generic or manufacturer-specific?
U350D is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove U350D 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 U350D is removable in your case.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
