C0387
Transfer Case Position Sensor
The transfer case control module has detected an implausible signal from the position sensor that reports the current shift position (2HI, 4HI, 4LO, neutral). Without a valid position the system cannot complete a range change.
The transfer case control module has detected an implausible signal from the position sensor that reports the current shift position (2HI, 4HI, 4LO, neutral). Without a valid position the system cannot complete a range change.
Common causes
- high
Transfer case position sensor failed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1320
- medium
Wiring or connector fault
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-1320
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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 C0387 mean?
C0387 means "Transfer Case Position Sensor". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C0387?
transfer case position sensor failed; wiring or connector fault; encoder motor stuck between positions — 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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