C059C

Code

Generic C — Chassis

Brake Pressure Sensor C Missing Calibration

Brand: Generic

Type: C — Chassis

Views: UK: 17 EN: 51 RU: 16

AI status

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Page language: EN

ABS and/or ESP/TRAC warning lamp illuminated
Brake warning or traction control lamp may be on and system functionality reduced/disabled
Stored DTC C059C (and possibly related ABS/communication codes) in ABS/BCM
Calibration procedure cannot be completed or returns failure message on scan tool
No perceptible change in basic pedal feel (mechanical brakes still work), but electronic brake features may be inactive

Connect a professional scan tool and read ABS/ESP control module codes and freeze-frame data
Check for related codes (CAN/communication, other pressure sensor codes) and record calibration status flags
Confirm recent service history for brake component replacement or battery disconnection
Visually inspect sensor C, mounting, electrical connector and wiring for damage, corrosion or loose pins
Measure vehicle battery voltage (should be within manufacturer specified range during calibration)
Attempt to view live data from the brake pressure sensor during pedal application or a controlled pressure test

Typical sensor supply: 5.0 V reference (verify with manufacturer data)
Typical output range: ~0.0–5.0 V proportional to pressure (at rest near low-voltage, under braking higher voltages)
Pressure range examples (manufacturer specific): 0–500 kPa (0–72 psi) — confirm OEM values
CAN/serial message rate: ABS module should receive brake pressure messages at expected interval (tool will show message presence/frequency)
Calibration status flag in ABS module: expected = ‘calibrated’/‘initialized’; actual = ‘not calibrated’/‘missing’

Verify vehicle battery is fully charged and connections are clean/tight. Low voltage can abort calibration.
Use a factory-level or capable scan tool to read and record all ABS/ESP and CAN codes, freeze-frame, and the brake pressure sensor C live data and calibration flag.
If recent service was performed, confirm the correct calibration/initialization procedure was followed per OEM service documentation.
Attempt the prescribed sensor calibration/initialization using the scan tool while monitoring live data and ensuring stable battery voltage; carefully follow tool prompts.
If calibration fails, perform a visual inspection of the sensor, connector and harness for corrosion, bent pins, or damage; repair any faults found.
Verify continuity and resistance of sensor wiring back to the ABS module; check grounds. Repair any short/open/corrosion issues.
If wiring is good, bench-test or back-probe the sensor while applying pressure (or simulate per OEM test) to confirm the sensor output varies within expected range.
Replace the brake pressure sensor C if it fails bench/live output tests, then re-run calibration procedure.
If a known-good sensor and wiring still will not calibrate, check for ABS module software updates/TSBs and consider ABS module failure or calibration memory fault; consult OEM diagnostics for module replacement or reprogramming steps.
After successful calibration, clear codes and perform a road test and re-check for reoccurrence.

Vehicle recently serviced (sensor, master cylinder, brake lines) and calibration step was not completed
Battery was disconnected or went flat during ABS/ESP initialization
Faulty sensor that fails self-test during calibration
Damaged harness/connector between sensor and ABS module preventing calibration signal
ABS module not recording calibration due to internal fault or missing software update

⚠️ Status

Brake Pressure Sensor C: calibration missing or incomplete. ABS/ESP features may be disabled until sensor is initialized and calibration completes.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.5 hours

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