C0044 code meaning
Brake Pressure Sensor A
What C0044 means
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.
C0044 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0044
- ABS or brake warning lamp on
- Stability and assist functions disabled
- Changed brake assist behaviour
Common causes of C0044
- Most likelyPressure sensor failed or out of range
- PossibleFault internal to the integrated brake unit
- Less likelyHarness or connector fault
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Brake pressure sensor a
What each part of C0044 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 44 | The exact fault in that area. |
What to do next
- Note C0044 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0044
What does C0044 mean?
C0044 means "Brake Pressure Sensor A". Covers brake pressure sensor A (sensor 1) in the ABS/ESC hydraulic unit, which measures master-cylinder or circuit brake pressure. It is a generic code, so it means the same on every make.
Is it safe to drive with C0044?
Drive gently and only to a workshop. With C0044 the car can go into limp mode (reduced power) to protect itself.
Will C0044 fail an emissions test?
C0044 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0044 to fix?
Difficulty: workshop only. A typical repair takes 1.5 to 4 hours of work. This is a job for a workshop.
Will C0044 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.