Chassis, generic

C059D Brake Pressure Sensor D Missing Calibration

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modePossible

C059D flags missing calibration data for a fourth hydraulic pressure sensor. No manufacturer publishes this code. Where the letter D appears elsewhere, GM's 2016 hybrid brake controller uses it for the rear-left wheel pressure sensor (C0575–C0578), yet reports that sensor's calibration fault as C059B; the letters of the calibration codes therefore follow each maker's own list. Mitsubishi's 2023 Outlander PHEV has a comparable fault without SAE number, C105E-92 for an uncalibrated pressure sensor, detected within 1 s, and tells technicians to clear a merely stored code instead of replacing the unit. A Bosch patent describes resetting an offset fault only after a successful check while driving. Practically, the module limits ABS/ESC functions until the scan tool calibration has passed.

Likely causes

Calibration of the sensor not done after hydraulic unit or module replacement

Code stored from an earlier event, sensor already calibrated

Brake module losing calibration data in its memory

Symptoms

ABS and ESC warning lamps on
Brake pressure based functions such as hill hold or brake blending limited

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 dbrake control module

Related codes

C059B C059C C059E C0578 C0560

References: gsi.ext.gm.com, mitsubishitechinfo.com, patents.google.com.