C0044Brake Pressure Sensor A
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- Covers brake pressure sensor A (sensor 1) in the ABS/ESC hydraulic unit, which measures master-cylinder or circuit brake pressure. The stability and brake modules use this reading to know how hard the driver is braking and to control traction, stability, brake assist and hill-hold. The module sets the code for a signal outside the valid range, an open or short, or a value that disagrees with pedal demand or a second pressure sensor. RAM assigns code C0044-01 to a general electrical failure of brake pressure sensor 1 on the 2024 2500; because the transducer sits inside the hydraulic control unit, the published repair replaces the whole integrated brake unit. A fault disables stability and assist functions and sets the ABS or brake warning lamp.
- What you may notice
- ABS or brake warning lamp on
- Stability and assist functions disabled
- Changed brake assist behaviour
- Likely causes
- LikelyPressure sensor failed or out of range
- PossibleFault internal to the integrated brake unit
- RareHarness or connector fault
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €400 – €2,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.