OBD Guide
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C112A

Incorrect Electric Parking Brake Motor Gear Unit Position

C112A is an OBD-II diagnostic trouble code meaning: Incorrect Electric Parking Brake Motor Gear Unit Position. Common causes: worn or damaged drive gears, drive mechanism jammed. Estimated repair cost: $167–444.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–444 (est.)

Symptoms

  • EPB fault light is on
  • The parking brake does not engage/disengage
  • Automatic EPB shutdown when driving does not work
  • Clicking or grinding noises from the rear brake area

Causes

  • Worn or damaged drive gears
  • Drive mechanism jammed
  • Problems with the position sensor
  • EPB motor malfunction
  • Open or short circuit in wiring harness

How to Fix

  1. Diagnostics of the EPB system using a scanner
  2. Checking the condition of the gear mechanism
  3. Testing the EPB electric motor
  4. Checking the integrity of the wiring harness and contacts
  5. Replacing faulty components
  6. Calibration of the EPB system after repair

Related codes

C112BC112CC112DC112E

FAQ

What does the C112A code mean?

C112A is an OBD-II diagnostic trouble code that indicates: Incorrect Electric Parking Brake Motor Gear Unit Position

What causes a C112A error code?

The most common causes of C112A include: Worn or damaged drive gears; Drive mechanism jammed; Problems with the position sensor; EPB motor malfunction.

How do I fix a C112A diagnostic trouble code?

To fix C112A: Diagnostics of the EPB system using a scanner. Checking the condition of the gear mechanism. Testing the EPB electric motor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C112A?

Limited driving only, diagnose soon

How much does it cost to fix C112A?

The estimated repair cost for C112A is $167–444. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat