OBD Guide
ENFRDEESPT

C1402

Front Speed Sensor Left Malfunction

C1402 is an OBD-II diagnostic trouble code meaning: Front Speed Sensor Left Malfunction. Common causes: damage to the wheel speed sensor, open or shorted wiring harness. Estimated repair cost: $56–167.

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

Symptoms

  • The ABS/ESC indicator on the dashboard is on
  • Disabling the ABS system
  • Disabling Electronic Stability Control (ESC)
  • Cruise control malfunctions
  • Incorrect speedometer readings (in some models)

Causes

  • Damage to the wheel speed sensor
  • Open or shorted wiring harness
  • Oxidation or damage to the sensor connector
  • The sensor is contaminated with metal shavings or dirt
  • ABS control unit malfunction
  • Damage to the sensor ring on the hub

How to Fix

  1. Carry out diagnostics with a scanner to confirm code C1402
  2. Visually inspect the sensor, wires and connector for damage
  3. Check the resistance and continuity of the sensor circuit
  4. Clean the sensor from dirt if necessary
  5. Check the condition of the sensor ring on the hub
  6. Replace the wheel speed sensor if a fault is detected
  7. Clean or replace connector if there is corrosion.
  8. Check and restore the integrity of the wiring harness if necessary
  9. Programmatically reset the error after repair

Related codes

C1400C1401C1403C1404C1405

FAQ

What does the C1402 code mean?

C1402 is an OBD-II diagnostic trouble code that indicates: Front Speed Sensor Left Malfunction

What causes a C1402 error code?

The most common causes of C1402 include: Damage to the wheel speed sensor; Open or shorted wiring harness; Oxidation or damage to the sensor connector; The sensor is contaminated with metal shavings or dirt.

How do I fix a C1402 diagnostic trouble code?

To fix C1402: Carry out diagnostics with a scanner to confirm code C1402. Visually inspect the sensor, wires and connector for damage. Check the resistance and continuity of the sensor circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1402?

Limited driving only, diagnose soon

How much does it cost to fix C1402?

The estimated repair cost for C1402 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat