C0387
Unable To Perform Shift
C0387 is an OBD-II diagnostic trouble code meaning: Unable To Perform Shift. Common causes: shift solenoids malfunction, electrical circuit problems (harness, connectors). Estimated repair cost: $56–333.
Symptoms
- The car does not change gears
- The gearbox goes into emergency mode
- Check Engine light comes on
Causes
- Shift solenoids malfunction
- Electrical circuit problems (harness, connectors)
- Low or contaminated automatic transmission oil
- Malfunction of speed or gear position sensors
- Mechanical failure inside the gearbox
How to Fix
- Check the level and condition of the oil in the automatic transmission
- Diagnose the gearshift solenoids
- Check the integrity of the wiring harness and connectors
- Diagnose speed and gear position sensors
- If necessary, replace faulty components
Related codes
Error C0387 by Vehicle Brand
FAQ
What does the C0387 code mean?
C0387 is an OBD-II diagnostic trouble code that indicates: Unable To Perform Shift
What causes a C0387 error code?
The most common causes of C0387 include: Shift solenoids malfunction; Electrical circuit problems (harness, connectors); Low or contaminated automatic transmission oil; Malfunction of speed or gear position sensors.
How do I fix a C0387 diagnostic trouble code?
To fix C0387: Check the level and condition of the oil in the automatic transmission. Diagnose the gearshift solenoids. Check the integrity of the wiring harness and connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0387?
Limited driving only, diagnose soon
How much does it cost to fix C0387?
The estimated repair cost for C0387 is $56–333. Actual cost depends on your vehicle, location, and labor rates.
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