ABS Pump Motor Circuit Open
What does C0080 mean?
The C0080 code means the vehicle's onboard diagnostic system has detected: ABS Pump Motor Circuit Open. This is a critical severity code.
Common Symptoms
- ABS light on dashboard
- Traction control disabled
- ABS does not engage during hard braking
- Pump motor does not run when activated
- Stability control warning message
Probable Causes (Ranked by Likelihood)
- Failed ABS pump motor winding Very High
- Open circuit in pump motor wiring High
- Corroded ABS motor connector Moderate
- ABS hydraulic module internal failure Low
Step-by-Step Diagnostic Procedure
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Scan ABS module for specific DTCs
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Check ABS pump motor resistance at connector
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Test power and ground at pump motor connector
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Inspect wiring from ABS relay to pump motor
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Attempt to actuate pump with scan tool
Frequently Asked Questions
Can the ABS pump motor be replaced separately?
On some vehicles, the motor is replaceable separately from the ABS hydraulic module. On many others, they are sold as one integrated unit, which increases the repair cost significantly.
Why is the ABS pump motor so expensive?
The ABS hydraulic unit is a precision-engineered assembly containing solenoid valves, the pump motor, and an accumulator. The complexity of the unit and the need for exact specifications drive the cost.
Will the regular brakes still work?
Yes. The standard hydraulic braking system will continue to function normally. Only the anti-lock braking function is lost, meaning wheels may lock up during hard braking on slippery surfaces.