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DTC codes / C05xx · Brakes, steering and suspension / C05F8

C05F84WD/AWD Range Actuator Control Circuit High

The code C05F8 indicates that the control module for the four-wheel-drive (4WD) or all-wheel-drive (AWD) system has detected an abnormally high voltage on the electrical circuit that operates the range actuator, which is the motor or solenoid responsible for shifting between drive ranges such as 2WD and 4WD or high and low range. The computer expects the circuit voltage to stay within a specific range when the actuator is commanded, and a high reading tells it that the circuit is likely open, shorted to voltage, or the actuator itself has failed.

SystemChassis
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaBrakes, steering and suspension

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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