OBD Guide

C1322

Brake Hydraulic Master Cylinder Piston Travel Sensor 1 Circuit Failure

C1322 is an OBD-II diagnostic trouble code meaning: Brake Hydraulic Master Cylinder Piston Travel Sensor 1 Circuit Failure. Common causes: open or short circuit in wiring harness, piston stroke sensor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • ABS/ESP indicator is on
  • Reduced braking performance
  • Disabling the stabilization system

Causes

  • Open or short circuit in wiring harness
  • Piston stroke sensor malfunction
  • Poor contact in connectors
  • Problems with the master cylinder

How to Fix

  1. Check the wiring harness for opens and shorts
  2. Check the contacts in the sensor connectors
  3. Replace the piston stroke sensor if necessary
  4. Check the brake master cylinder

Related codes

FAQ

What does the C1322 code mean?

C1322 is an OBD-II diagnostic trouble code that indicates: Brake Hydraulic Master Cylinder Piston Travel Sensor 1 Circuit Failure

What causes a C1322 error code?

The most common causes of C1322 include: Open or short circuit in wiring harness; Piston stroke sensor malfunction; Poor contact in connectors; Problems with the master cylinder.

How do I fix a C1322 diagnostic trouble code?

To fix C1322: Check the wiring harness for opens and shorts. Check the contacts in the sensor connectors. Replace the piston stroke sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1322?

Limited driving only, diagnose soon

How much does it cost to fix C1322?

The estimated repair cost for C1322 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat