OBD Guide

C05C4

Brake Pressure Sensor F Missing Calibration

C05C4 is an OBD-II diagnostic trouble code meaning: Brake Pressure Sensor F Missing Calibration. Common causes: calibration failed after replacing sensor, software failure in the brake ecu. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The brake system fault indicator is on
  • Loss of ABS/ESP functionality
  • Incorrect brake pressure readings

Causes

  • Calibration failed after replacing sensor
  • Software failure in the brake ECU
  • Mechanical damage to the pressure sensor
  • Problems with the sensor wiring harness

How to Fix

  1. Diagnose the brake system with a scanner
  2. Check the integrity of the sensor and wiring harness
  3. Perform pressure sensor calibration procedure
  4. If necessary, replace the faulty sensor
  5. Update ECU firmware (if required)

Related codes

Error C05C4 by Vehicle Brand

FAQ

What does the C05C4 code mean?

C05C4 is an OBD-II diagnostic trouble code that indicates: Brake Pressure Sensor F Missing Calibration

What causes a C05C4 error code?

The most common causes of C05C4 include: Calibration failed after replacing sensor; Software failure in the brake ECU; Mechanical damage to the pressure sensor; Problems with the sensor wiring harness.

How do I fix a C05C4 diagnostic trouble code?

To fix C05C4: Diagnose the brake system with a scanner. Check the integrity of the sensor and wiring harness. Perform pressure sensor calibration procedure. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C05C4?

Limited driving only, diagnose soon

How much does it cost to fix C05C4?

The estimated repair cost for C05C4 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat