C0307
Motor A/B Circuit Range/Performance
C0307 is an OBD-II diagnostic trouble code meaning: Motor A/B Circuit Range/Performance. Common causes: open or short circuit in wiring harness, malfunction of the motor solenoid valve (solenoid). Estimated repair cost: $56–167.
Symptoms
- Loss of power or unstable operation of the motor
- Dips during acceleration
- Activating emergency mode
- Check Engine Light Illuminates
Causes
- Open or short circuit in wiring harness
- Malfunction of the motor solenoid valve (solenoid)
- Corrosion or poor contact in connectors
- Failure of the control module (ECU)
- Mechanical motor failure (rare)
How to Fix
- Check resistance and continuity of motor circuit (A/B)
- Inspect the wiring harness for damage
- Test the operation of the solenoid valve (solenoid)
- Clean or replace oxidized connectors
- If necessary, replace the motor or control module
Related codes
Error C0307 by Vehicle Brand
FAQ
What does the C0307 code mean?
C0307 is an OBD-II diagnostic trouble code that indicates: Motor A/B Circuit Range/Performance
What causes a C0307 error code?
The most common causes of C0307 include: Open or short circuit in wiring harness; Malfunction of the motor solenoid valve (solenoid); Corrosion or poor contact in connectors; Failure of the control module (ECU).
How do I fix a C0307 diagnostic trouble code?
To fix C0307: Check resistance and continuity of motor circuit (A/B). Inspect the wiring harness for damage. Test the operation of the solenoid valve (solenoid). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0307?
Limited driving only, diagnose soon
How much does it cost to fix C0307?
The estimated repair cost for C0307 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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