OBD Guide
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C1156

Speed Wheel Sensor Communication Circuit

C1156 is an OBD-II diagnostic trouble code meaning: Speed Wheel Sensor Communication Circuit. Common causes: open or shorted wiring harness, wheel speed sensor malfunction. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • ABS/ESP indicator is on
  • Disabling the ABS system
  • Disabling the ESP system
  • Incorrect operation of cruise control

Causes

  • Open or shorted wiring harness
  • Wheel speed sensor malfunction
  • Poor contact in the sensor connector
  • Damage to the wiring around the sensor
  • ABS control unit malfunction

How to Fix

  1. Check the integrity of the wiring harness to the sensor
  2. Check the contacts in the sensor connector
  3. Check sensor resistance (compare with specification)
  4. Check the sensor signal with an oscilloscope
  5. Replace sensor if necessary
  6. Check the ABS control unit if the error occurs repeatedly

Related codes

C1155C1157C0035C0040

FAQ

What does the C1156 code mean?

C1156 is an OBD-II diagnostic trouble code that indicates: Speed Wheel Sensor Communication Circuit

What causes a C1156 error code?

The most common causes of C1156 include: Open or shorted wiring harness; Wheel speed sensor malfunction; Poor contact in the sensor connector; Damage to the wiring around the sensor.

How do I fix a C1156 diagnostic trouble code?

To fix C1156: Check the integrity of the wiring harness to the sensor. Check the contacts in the sensor connector. Check sensor resistance (compare with specification). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1156?

Limited driving only, diagnose soon

How much does it cost to fix C1156?

The estimated repair cost for C1156 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat