C0265 ABS pump motor relay circuit open

By: Diagno editorial team · Updated: 2026-10-15

C0265 means: ABS pump motor relay circuit open. The ABS and stability system found a fault in a wheel sensor, the pump, a valve or the module. Drive gently and have the car checked soon. The repair usually costs about €60–900 in Estonia. The most common cause: wheel sensor faulty or covered in dirt.

What it means

The ABS and stability system found a fault in a wheel sensor, the pump, a valve or the module. The normal brakes still work, but ABS and ESP may be switched off.

What you may notice

• ABS and ESP lights on
• Wheels may lock on slippery roads
• The speedometer may not work on some cars

What could be wrong

1. 1Wheel sensor faulty or covered in dirt
2. 2Sensor wire broken near the wheel
3. 3Damaged wheel bearing tone ring
4. 4ABS pump or module

Repair difficulty: Moderate

What you can check yourself

Drive especially carefully on slippery roads because ABS may not work. Check that the sensor wire near the wheel is intact. You can check the simple things yourself, but the repair is best done in a workshop.

How we fix it

1. We compare all wheel speeds on the diagnostic tool
2. We measure the sensor and wiring
3. We clean or replace the sensor or bearing, or repair the module

Standard SAE description: EBCM Motor Relay Circuit Open