AutoCodes – Mazda – C1278 Mazda

C1278 Mazda Code - Steering Angle Sensor

Quick Answer

The steering wheel rotation (in degrees) is sent to the Anti-Lock Brake System (ABS) module. Common causes include Improper installation or positioning of the steering angle sensor, Faulty Steering Angle Sensor, Steering Angle Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C1278 Mazda indicates Steering Angle Sensor.
Common causes: Common causes include Improper installation or positioning of the steering angle sensor, Faulty Steering Angle Sensor, Steering Angle Sensor harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 12,919

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1278 Mazda Description

The steering wheel rotation (in degrees) is sent to the Anti-Lock Brake System (ABS) module. Voltage is supplied to the steering wheel angle sensor from the ABS module and ground is provided by the ABS module. The steering wheel rotation sensor monitor the steering wheel position when the slotted wheel in the clockspring assembly rotates through the infrared light generated by the sensor.

OBDII Code C1278 Mazda - Steering Angle Sensor - AutoCodes.com — C1278 Mazda Code - Steering Angle Sensor

What does this mean?

What are the Possible Causes of the DTC C1278 Mazda?

Improper installation or positioning of the steering angle sensor
Faulty Steering Angle Sensor
Steering Angle Sensor harness is open or shorted
Steering Angle Sensor circuit poor electrical connection

How to Fix the DTC C1278 Mazda?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1278 Mazda code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1278 Mazda code?

Need more information on how to fix the C1278 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1278 Mazda code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1278 Mazda Code

1. What are the common symptoms of OBDII code C1278 in a Mazda related to the Steering Angle Sensor?

The common symptoms include the traction control light or ABS light illuminating on the dashboard, unstable steering, and potential loss of traction control functionality.

2. What are the possible causes of OBDII code C1278 in a Mazda related to the Steering Angle Sensor?

The code C1278 is often triggered by a malfunction or failure of the Steering Angle Sensor itself, damaged wiring or connectors, or issues with the sensor calibration.

3. How can I diagnose the Steering Angle Sensor issue causing OBDII code C1278 in my Mazda?

Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, followed by inspecting the Steering Angle Sensor, its wiring, and connectors for any visible damage or issues.

4. Can I drive my Mazda with OBDII code C1278 related to the Steering Angle Sensor?

It is not recommended to drive the vehicle with this issue as it may affect the stability and safety systems, leading to potential loss of control or traction.

5. Is it possible to reset OBDII code C1278 in a Mazda without fixing the Steering Angle Sensor problem?

Resetting the code without addressing the underlying issue will likely result in the code reappearing once the system detects the problem again.

6. How much does it typically cost to repair the Steering Angle Sensor issue causing OBDII code C1278 in a Mazda?

The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars including parts and labor.

7. Can I replace the Steering Angle Sensor in my Mazda myself to resolve OBDII code C1278?

Replacing the Steering Angle Sensor may require specialized tools and technical knowledge, so it is recommended to have it done by a professional mechanic to ensure proper installation and calibration.

8. Are there any preventive maintenance tips to avoid OBDII code C1278 related to the Steering Angle Sensor in a Mazda?

Regularly inspecting and maintaining the steering and stability control systems, and addressing any warning lights or unusual steering behavior promptly, can help prevent issues with the Steering Angle Sensor.

9. How important is it to fix OBDII code C1278 related to the Steering Angle Sensor in a Mazda?

Addressing this issue promptly is crucial to ensure the proper functioning of the vehicle's stability and traction control systems, as well as maintaining safe driving conditions.

10. Can a malfunctioning Steering Angle Sensor causing OBDII code C1278 lead to other problems in my Mazda?

Yes, a malfunctioning Steering Angle Sensor can affect the overall stability and safety systems of the vehicle, potentially leading to issues with steering control, traction control, and overall driving safety.