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Code
C0277
Brakes / ABS

ABS pump motor circuit malfunction

The ABS pump motor circuit has an electrical fault.

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Most likely causes

  1. Faulty ABS pump motor
  2. Relay fault
  3. Wiring fault

Symptoms you may notice

  • ABS light
  • Longer stopping distances

Checks to run

  1. Check pump motor relay and fuse
  2. Test the motor
  3. Inspect wiring

Tools you may need

Multimeter
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Brakes / ABS

C0035

Left front wheel speed sensor circuit malfunction

 C0040

Right front wheel speed sensor circuit malfunction

 C0045

Left rear wheel speed sensor circuit malfunction

 C0050

Right rear wheel speed sensor circuit malfunction

 C0041

Right front wheel speed sensor range / performance
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