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
The ABS module monitors various inputs and compares the values to what should be expected. If the values received are out of range or not what should be expected, the ABS module sets a DTC.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| C0044:47 | Brake Pressure Sensor "A": Watchdog/Safety Failure | Sets when the ABS module detects an internal fault. |
| C0044:49 | Brake Pressure Sensor "A": Internal Electronic Failure | Sets when the ABS module detects an internal fault with the HCU. |
| C0044:51 | Brake Pressure Sensor "A": Not Programmed | Sets when the ABS module detects an internal fault. |
| C0044:64 | Brake Pressure Sensor "A": Signal Plausibility Failure | Sets when the ABS module detects a fault with the brake fluid pressure. |
| C0044:8F | Brake Pressure Sensor "A": Erratic | Sets when the ABS module detects an internal fault with the HCU. |
| C1A08:1C | Pressure Sensor Supply: Circuit Voltage Out of Range | Sets when the ABS module detects the brake system pressure sensor voltage supply is out of range. |
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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.
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