C0110: Pump Motor Circuit Malfunction
Can you still drive? Yes, normal brakes work. ABS anti-lock braking is not available. Drive carefully and allow extra braking distance in wet or slippery conditions.
What Does C0110 Mean?
Code C0110 indicates that the ABS control module has detected a malfunction in the ABS hydraulic pump motor circuit. The pump motor is responsible for generating hydraulic pressure to modulate brake force during ABS events. A failed pump means ABS cannot reduce wheel lockup during emergency braking.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Failed ABS pump motor
- Corroded ABS pump motor relay
- Damaged wiring to ABS hydraulic unit
- Low system voltage causing insufficient pump operation
- ABS module internal failure
Symptoms
- ABS warning light on
- Traction control light illuminated
- Grinding or buzzing noise from ABS module area
- ABS does not activate during hard braking
- Brake pedal feels different during panic stops
Diagnostic Steps
- 1Scan ABS module for codes and freeze frame data
- 2Check ABS pump motor relay and fuse
- 3Test voltage supply to the ABS pump motor
- 4Listen for pump motor operation when commanding it via scan tool
- 5Check ground connections for the ABS module
- 6Inspect wiring harness to ABS hydraulic unit for damage
Recommended Parts & Tools
ABS pump motor relay
automotive multimeter
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $150 - $1500 |
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Chat with AI About C0110Commonly Affected Vehicles
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Frequently Asked Questions
Is the ABS pump motor the same as the ABS module?
The pump motor is a component within the ABS hydraulic modulator assembly. Some vehicles allow replacing just the motor, while others require the entire ABS module.
Can a weak battery cause C0110?
Yes, low system voltage can prevent the ABS pump from operating correctly. Check battery and charging system health as part of your diagnosis.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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