OBD Guide

C0227

Erratic Left Front Speed Sensor

C0227 is an OBD-II diagnostic trouble code meaning: Erratic Left Front Speed Sensor. Common causes: damage to the wheel speed sensor, sensor or ring gear dirty. 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
  • Unstable ABS operation
  • Disabling the ESP system
  • Inability to activate cruise control

Causes

  • Damage to the wheel speed sensor
  • Sensor or ring gear dirty
  • Open or shorted wiring harness
  • Poor contact in the sensor connector
  • Malfunction of the ABS/ESP control unit

How to Fix

  1. Visual inspection of the sensor and wiring harness
  2. Checking the sensor resistance
  3. Cleaning the Sensor and Ring Gear
  4. Checking the integrity of the wiring harness
  5. Replace the sensor if necessary

Related codes

Error C0227 by Vehicle Brand

FAQ

What does the C0227 code mean?

C0227 is an OBD-II diagnostic trouble code that indicates: Erratic Left Front Speed Sensor

What causes a C0227 error code?

The most common causes of C0227 include: Damage to the wheel speed sensor; Sensor or ring gear dirty; Open or shorted wiring harness; Poor contact in the sensor connector.

How do I fix a C0227 diagnostic trouble code?

To fix C0227: Visual inspection of the sensor and wiring harness. Checking the sensor resistance. Cleaning the Sensor and Ring Gear. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C0227?

Limited driving only, diagnose soon

How much does it cost to fix C0227?

The estimated repair cost for C0227 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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