The control module detected a fault associated with the 4WD/AWD Power Transfer Unit Actuator circuit or function; the stored code identifies the affected component rather than a single failure mode.
TuningBot DTC Database · v4.37.15
C0090 4WD/AWD Power Transfer Unit Actuator
Generic (OBD-II) interpretation in the TuningBot DTC database.
What C0090 means
Related and nearby codes
How to read C0090
Chassis: brakes, steering and suspension.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about C0090
What does C0090 mean?
4WD/AWD Power Transfer Unit Actuator. The control module detected a fault associated with the 4WD/AWD Power Transfer Unit Actuator circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is C0090 generic or manufacturer-specific?
C0090 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove C0090 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 C0090 is removable in your case.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
