OBD Guide
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C1278

Steering Wheel Angle 1 And 2 Signal Faulted

C1278 is an OBD-II diagnostic trouble code meaning: Steering Wheel Angle 1 And 2 Signal Faulted. Common causes: malfunction of the steering angle sensor, broken or damaged wiring harness to the sensor. Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • ESP or CHECK ENGINE indicator is on
  • Reduced effectiveness of the stabilization system
  • Problems with Prosecutor steering

Causes

  • Malfunction of the steering angle sensor
  • Broken or damaged wiring harness to the sensor
  • Problems with connectors or contacts
  • ESP module malfunction

How to Fix

  1. Check the integrity of the wiring harness and sensor connectors
  2. Scan the system for additional errors
  3. Check the functionality of the steering angle sensor
  4. If necessary, replace the sensor or restore the connection

Related codes

C1279C1280U0121

FAQ

What does the C1278 code mean?

C1278 is an OBD-II diagnostic trouble code that indicates: Steering Wheel Angle 1 And 2 Signal Faulted

What causes a C1278 error code?

The most common causes of C1278 include: Malfunction of the steering angle sensor; Broken or damaged wiring harness to the sensor; Problems with connectors or contacts; ESP module malfunction.

How do I fix a C1278 diagnostic trouble code?

To fix C1278: Check the integrity of the wiring harness and sensor connectors. Scan the system for additional errors. Check the functionality of the steering angle sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1278?

Limited driving only, diagnose soon

How much does it cost to fix C1278?

The estimated repair cost for C1278 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat