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 |
|---|---|---|
| B10DF:46 | Master Cylinder Isolation Valve: Calibration/Parameter Memory Failure | Sets when the ABS module detects a calibration failure between the HCU and the ABS module or an internal fault exists within the ABS module. |
| P0942:46 | Hydraulic Pressure Unit: Calibration/Parameter Memory Failure | Sets when the identification data stored in the ABS module does not match the identification data from the HCU. |
| P0942:49 | Hydraulic Pressure Unit: Internal Electronic Failure | Sets when the identification data stored in the ABS module does not match the identification data from the HCU. |
| U2007:46 | Valve(s): Calibration/Parameter Memory Failure | Sets due to an internal failure of the ABS module or due to a calibration failure between the HCU and the ABS module. |
| U2007:62 | Valve(s): Signal Compare Failure | Sets due to an internal failure of the ABS module or due to a calibration failure between the HCU and the ABS module. |
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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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