C0539
Motor Control B Supply Voltage Circuit/Open
C0539 is an OBD-II diagnostic trouble code meaning: Motor Control B Supply Voltage Circuit/Open. Common causes: broken or damaged wiring harness, faulty relay or fuse. Estimated repair cost: $56–167.
Symptoms
- Unstable engine operation
- Power dips
- Check Engine Light Illuminates
- Problems starting the engine
Causes
- Broken or damaged wiring harness
- Faulty relay or fuse
- Problems with the engine control unit (ECU)
- Short circuit in the circuit
How to Fix
- Check fuses and relays connected to the ECU power supply circuit
- Inspect the wiring harness for damage or breaks.
- Check the voltage at the control unit terminals
- Replace damaged components or wiring harness as necessary
- Test the engine control unit
Related codes
Error C0539 by Vehicle Brand
FAQ
What does the C0539 code mean?
C0539 is an OBD-II diagnostic trouble code that indicates: Motor Control B Supply Voltage Circuit/Open
What causes a C0539 error code?
The most common causes of C0539 include: Broken or damaged wiring harness; Faulty relay or fuse; Problems with the engine control unit (ECU); Short circuit in the circuit.
How do I fix a C0539 diagnostic trouble code?
To fix C0539: Check fuses and relays connected to the ECU power supply circuit. Inspect the wiring harness for damage or breaks.. Check the voltage at the control unit terminals. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0539?
Limited driving only, diagnose soon
How much does it cost to fix C0539?
The estimated repair cost for C0539 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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