C0063high severityChassis
ABS Pump Motor Circuit Open
on 2023 Mazda Mazda3 2.0L I4 · AWD
What this code means
Open circuit detected in the ABS pump motor wiring or motor winding.
Symptoms
- ABS light on
- ABS pump does not run at all
- Complete ABS failure
- Hard brake pedal during ABS demand
Common causes
- Broken wire to pump motor
- Pump motor winding open
- Blown pump motor fuse
- Corroded connector
Diagnostic steps
- Check pump motor fuse
- Test continuity of pump motor circuit
- Inspect pump motor connector
- Test motor winding resistance
Repair notes
Repair open circuit or replace ABS pump motor assembly.
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C0021
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C0022
RF Wheel Speed Sensor Range/Performance
C0023
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C0024
RR Wheel Speed Sensor Range/Performance
C0025
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C0026
RF Wheel Speed Sensor Circuit Intermittent
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LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0036
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