Chassis, generic

C059C Brake Pressure Sensor C Missing Calibration

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Sensor calibration not performed after replacing the brake module or modulator
Calibration aborted because the pedal was pressed or the vehicle moved
Stored data does not match the fitted sensor (checksum or ID)

Symptoms

  • ABS/ESC warning lamp on
  • Stability control or brake assist functions switched off

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€60–300
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

brake pressure sensor cbrake control module

Related codes

C059BC059DC059EC0560C0574

References: gsi.ext.gm.com, fordservicecontent.com, gsi.ext.gm.com, saabwisonline.com.