Code Definition

C0044 — Brake Pressure Sensor A

System: Chassis  |  Type: Generic (OBD-II Standard)  |  Make: Mazda

About C0044

C0044 is a generic (obd-ii standard) chassis diagnostic trouble code recorded for Mazda vehicles. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C0044 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

Because C0044 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The ABS/DSC control module continuously monitors the brake pressure sensor signal to determine actual hydraulic brake pressure during braking, traction control, and stability control operation. DTC C0044 is set when the module detects that the signal from Brake Pressure Sensor A is missing, implausible, or outside the calibrated voltage range for a given operating condition. This indicates the module cannot reliably determine brake hydraulic pressure, which compromises brake control and stability functions.

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