Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Normal Operation And Fault Conditions
2021 Ford Explorer XLT, RWDSECTION Normal Operation And Fault Conditions
The EBB unit uses a motor to pressurize the brake system and to operate the ABS, ESC, RSC and other stability control features. The ABS module monitors the motor performance and sets a DTC when a motor fault is detected.
PPT CP ABS MODULE DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| C0594:12 | Brake Booster Motor 'A' Performance: Circuit Short To Battery | This DTC sets when the ABS module detects a voltage that is higher than expected. |
| C0594:78 | Brake Booster Motor 'A' Performance: Alignment or Adjustment Incorrect | This DTC sets when the ABS module detects a Booster Motor adjustment or alignment condition within the HCU. |
| C0594:92 | Brake Booster Motor 'A' Performance: Performance or Incorrect Operation | This DTC sets when the ABS module detects when the Brake Booster Motor 'A' is not performing correctly or is inoperative. |
| C0596:00 | Brake Booster Motor 'A' Current Sensor Circuit Range/Performance: No Sub Type Information | This DTC sets when the ABS module detects a current sensor reading that does not match what is expected. |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.