C0110

Pump Motor Circuit

Car Fault Codes Chassis & brakes

Can you still drive? With care, short trips only

Who can fix it? Needs a workshop

Typical repair time 30 minutes – 6 hours

Typical cost SAR 100 to 8,000

What it means

The ABS module has detected a fault in the electrical circuit of the pump motor that returns brake fluid during ABS operation. The module usually disables ABS and may disable traction and stability control, while normal braking still works. Detection conditions and test methods vary by manufacturer.

Symptoms4

ABS light on, often with traction control (TCS) and stability lights.
ABS not working under hard braking.
On some vehicles, the usual pump self-test sound is missing when pulling away.
Code sometimes appears with a weak battery or after a jump start.

Possible causes5

Blown pump motor fuse or a faulty relay on systems where it is external.
Poor ABS module ground or a corroded connector.
Low battery voltage or weak charging.
Worn pump motor brushes or a motor seized from lack of use or moisture.
Internal ABS module fault preventing the motor from running or being monitored.

How to diagnose5

Read the ABS module codes and note the conditions when the code set.
Check the battery and charging, since low voltage can set this code.
Check the pump fuse and relay, and measure power and ground at the ABS module connector per the manufacturer procedure.
Run the pump motor test with a scan tool if available and listen for it to operate.
Inspect the connector for corrosion or water before condemning the pump or module.

How to fix5

Replace the faulty fuse or relay after confirming there is no short.
Repair the ground and clean the ABS module connector.
Charge or replace the battery and fix any charging problem.
Replace the pump motor or the ABS hydraulic unit as the manufacturer allows, then perform any required brake bleeding.
Clear the codes, run the pump test and a road test, and confirm the code does not return.

Repair cost

0–500

500–2,000

2,000–5,000

5,000+

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low for a fuse, ground or battery, and reaches the upper end if the pump or ABS hydraulic unit must be replaced.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions

Are the brakes safe with this code?

Normal braking works, but ABS is off, so wheels may lock under hard braking. Drive carefully and repair it soon.

Does the whole ABS unit need replacing?

Not always. Start with the fuse, ground and battery. Some vehicles allow the pump motor to be replaced alone, while others require the complete hydraulic unit.

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This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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