C0387: Transfer Case Position Sensor
Standardized SAE J2012 code · C03xx codes
Safety-critical system. Faults in airbags, brakes, steering or high-voltage components can put people at risk. Follow the manufacturer's service information and safety procedures, or have the vehicle checked by a qualified workshop.
What does C0387 mean?
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 code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
- High Transfer case position sensor failed
- Medium Wiring or connector fault
- Low Encoder motor stuck between positions
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of C0387 on the same make and model first.
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