C059C code meaning
Brake Pressure Sensor C Missing Calibration
What C059C means
For pressure sensor C the module finds no confirmed calibration record. Such a record usually holds the zero offset and a status flag written on the assembly line or by the scan tool. No maker documents C059C publicly. Related checks are published: GM's 2019 EBCM reads only that status flag for its master cylinder sensor (C0560) 500 ms after wake-up, Type A with MIL, and Ford hybrids compare checksum and sensor ID between sensor and module (150 or 70 ms). GM's 2016 hybrid controller uses C0571–C0574 for a master cylinder sensor but files its calibration fault under C0560, so letters in calibration codes need not match circuit codes. Saab names module and modulator replacement as reasons to recalibrate with the brake released and the car secured.
C059C at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C059C
- ABS/ESC warning lamp on
- Stability control or brake assist functions switched off
Common causes of C059C
- Most likelySensor calibration not performed after replacing the brake module or modulator
- PossibleCalibration aborted because the pedal was pressed or the vehicle moved
- Less likelyStored data does not match the fitted sensor (checksum or ID)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Brake pressure sensor cBrake control module
What each part of C059C means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 9C | The exact fault in that area. |
What to do next
- Note C059C 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 C059C
What does C059C mean?
C059C means "Brake Pressure Sensor C Missing Calibration". For pressure sensor C the module finds no confirmed calibration record. It is a generic code, so it means the same on every make.
Is it safe to drive with C059C?
Drive gently and only to a workshop. With C059C the car can go into limp mode (reduced power) to protect itself.
Will C059C fail an emissions test?
C059C 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 C059C to fix?
Difficulty: workshop only. A typical repair takes 0.3 to 1.5 hours of work. This is a job for a workshop.
Will C059C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.