C0374
4WD Drive Coupling
The 4WD or AWD control module has detected a fault on the electronic drive coupling that distributes torque between axles. Reduced torque transfer or a complete loss of all-wheel drive function may result.
The 4WD or AWD control module has detected a fault on the electronic drive coupling that distributes torque between axles. Reduced torque transfer or a complete loss of all-wheel drive function may result.
Common causes
- high
Coupling actuator failed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $440-3300
- medium
Coupling oil overheated
A plausible cause — test and verify before replacing parts.
Typical part cost: $440-3300
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does C0374 mean?
C0374 means "4WD Drive Coupling". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C0374?
coupling actuator failed; coupling oil overheated; wiring or connector fault — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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