OBD Guide
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C12E4

ABS Sensor Reference Output Circuit

C12E4 is an OBD-II diagnostic trouble code meaning: ABS Sensor Reference Output Circuit. Common causes: broken or damaged abs sensor wires, poor contact in the abs sensor connector. Estimated repair cost: $56–167.

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

Symptoms

  • The ABS indicator on the dashboard is on
  • Disabling the ABS system
  • Poor braking performance on slippery surfaces

Causes

  • Broken or damaged ABS sensor wires
  • Poor contact in the ABS sensor connector
  • ABS sensor malfunction
  • Problems with the ABS module

How to Fix

  1. Check the integrity of the ABS sensor wires
  2. Check the contacts in the ABS sensor connector
  3. Check ABS sensor resistance (must meet specification)
  4. If necessary, replace the ABS sensor
  5. Check the ABS module for faults

Related codes

C12E3C12E5C12E6

FAQ

What does the C12E4 code mean?

C12E4 is an OBD-II diagnostic trouble code that indicates: ABS Sensor Reference Output Circuit

What causes a C12E4 error code?

The most common causes of C12E4 include: Broken or damaged ABS sensor wires; Poor contact in the ABS sensor connector; ABS sensor malfunction; Problems with the ABS module.

How do I fix a C12E4 diagnostic trouble code?

To fix C12E4: Check the integrity of the ABS sensor wires. Check the contacts in the ABS sensor connector. Check ABS sensor resistance (must meet specification). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C12E4?

Limited driving only, diagnose soon

How much does it cost to fix C12E4?

The estimated repair cost for C12E4 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat