OBD-II code · Chassis
C0388 Transfer Case High Range Switch Circuit Malfunction
The transfer case control module has detected an implausible state from the high range (4H) position switch. Range selection in 4WD mode may be limited.
Is it safe to drive with C0388?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyHigh range position switch failed
- PossibleShift actuator out of position
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Transfer Case Switch, Transfer Case Module, Shift Actuator
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.