C0065
ABS Accumulator Pressure Low
2016-2021 Mazda CX-3 2.0L I4
High SeverityChassisGeneric (SAE)
Description
The ABS brake pressure accumulator has insufficient pressure to support ABS or traction control operations.
Symptoms
- ABS light on
- Brake pedal very firm
- Long pedal travel
- Traction control disabled
- Warning chime
Common Causes
- Leaking accumulator
- Faulty ABS pump not building pressure
- Accumulator nitrogen charge depleted
- Internal hydraulic leak in modulator
Diagnostic Steps
- Check accumulator pressure with scan tool
- Monitor pump run time and pressure build
- Inspect for external brake fluid leaks
- Test pump motor operation
- Check for hydraulic unit internal leaks
Repair Notes
Replace accumulator or ABS hydraulic unit. Bleed system thoroughly.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0025LF Wheel Speed Sensor Circuit Intermittent
C0065 on Other Vehicles
Common Questions
What does code C0065 mean on a 2016-2021 Mazda CX-3?
C0065 stands for "ABS Accumulator Pressure Low". The ABS brake pressure accumulator has insufficient pressure to support ABS or traction control operations.
What are the symptoms of C0065 on a Mazda CX-3?
Common symptoms of C0065 include: ABS light on, Brake pedal very firm, Long pedal travel, Traction control disabled, Warning chime.
What causes C0065 on a 2016-2021 Mazda CX-3?
Common causes of C0065 include: Leaking accumulator, Faulty ABS pump not building pressure, Accumulator nitrogen charge depleted, Internal hydraulic leak in modulator.