Code result

C0539

Motor Control B Supply Voltage Circuit/Open

High severity

What it means

Motor Control B Supply Voltage Circuit/Open: the circuit is open. Likely a broken wire, disconnected connector, or failed component.

Is it safe to drive?

No — stop driving

This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.

Most likely causes

  • Supply fuse blown

    high

    One of the most commonly reported causes for this code — check this first.

  • Pin pushed back out of connector body

    low

    Less common, but worth ruling out after the more likely causes.

  • Cracked solder joint inside the module or sensor

    low

    Less common, but worth ruling out after the more likely causes.

Get the full diagnosis

Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.

Diagnose C0539 free

No credit card required