C053F code meaning
Brake Pressure Sensor A Circuit High
Chassis system Generic code C05xx codes Check engine light
What C053F means
Brake pressure sensor A reports a voltage above the upper limit of its valid band. Since the sensor is fed with 5 V, a short of the signal line to the reference or to battery voltage, a broken ground wire or an internal fault can push the reading up; a Saab 9-5 brake unit draws the line at 4.75 V lasting 0.1 s. GM-built Saab 9-5 models from 2011 check both the 5-V reference and the signal wire of the pressure sensor, which sits in the brake modulator valve block, and then disable ABS, traction and stability control for the ignition cycle. The only public code mapping comes from Mitsubishi: C106C-17 equals C053F on the 2023 Outlander PHEV, with ASC lamp and MIL after two trips and a detection delay of a second at most. C053E is the opposite fault.
C053F at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.3 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C053F
- ABS and stability control warning lamps on
- Traction control, stability control and hill-start assist unavailable
- Check-engine lamp on some hybrids
Common causes of C053F
- Most likelySignal wire shorted to the 5-V reference or battery voltage
- PossibleOpen or corroded sensor ground
- PossiblePressure sensor in the hydraulic unit defective
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Brake pressure sensor aSensor wiring
What each part of C053F means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 3F | The exact fault in that area. |
What to do next
- Note C053F 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 C053F
What does C053F mean?
C053F means "Brake Pressure Sensor A Circuit High". Brake pressure sensor A reports a voltage above the upper limit of its valid band. It is a generic code, so it means the same on every make.
Is it safe to drive with C053F?
Drive gently and only to a workshop. With C053F the car can go into limp mode (reduced power) to protect itself.
Will C053F fail an emissions test?
C053F 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 C053F to fix?
Difficulty: medium. A typical repair takes 0.3 to 3 hours of work. This is a job for a workshop.
Will C053F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.