OBD Guide
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C1392

Un-Correction Of A Zero Point Of The Stroke Sensor

C1392 is an OBD-II diagnostic trouble code meaning: Un-Correction Of A Zero Point Of The Stroke Sensor. Common causes: replacing the brake pedal travel sensor without subsequent calibration, replacing the pedal assembly or master cylinder. Estimated repair cost: $6–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–89 (est.)

Symptoms

  • The brake system or ABS/ESP indicator is on
  • Incorrect or delayed response of the braking system
  • Diagnostic code C1392
  • Regenerative braking malfunction (on hybrids/electric vehicles)
  • Brake calibration warning

Causes

  • Replacing the brake pedal travel sensor without subsequent calibration
  • Replacing the pedal assembly or master cylinder
  • Replacing the brake system control unit
  • Low battery that resets calibration data
  • Malfunction of the pedal travel sensor itself

How to Fix

  1. Read error codes with a diagnostic scanner
  2. Make sure that the brake pedal is not pressed (home position)
  3. Perform the procedure for correcting the zero point of the pedal travel sensor through the scanner (Zero Point Calibration)
  4. Check the sensor data in real time: with the pedal not pressed, the value should be close to zero
  5. If correction is not possible, check and, if necessary, replace the sensor
  6. Reset codes and test drive to check

Related codes

C1306C1079C1281C1254

FAQ

What does the C1392 code mean?

C1392 is an OBD-II diagnostic trouble code that indicates: Un-Correction Of A Zero Point Of The Stroke Sensor

What causes a C1392 error code?

The most common causes of C1392 include: Replacing the brake pedal travel sensor without subsequent calibration; Replacing the pedal assembly or master cylinder; Replacing the brake system control unit; Low battery that resets calibration data.

How do I fix a C1392 diagnostic trouble code?

To fix C1392: Read error codes with a diagnostic scanner. Make sure that the brake pedal is not pressed (home position). Perform the procedure for correcting the zero point of the pedal travel sensor through the scanner (Zero Point Calibration). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1392?

Limited driving only, diagnose soon

How much does it cost to fix C1392?

The estimated repair cost for C1392 is $6–89. Actual cost depends on your vehicle, location, and labor rates.

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