AutoCodes – GMC – C0455 GMC

C0455 GMC Code - Front Steering Position Sensor Circuit

Quick Answer

The Electronic Brake Control Module (EBCM) receives several inputs from the steering wheel position sensor. Common causes include Faulty Front Steering Position Sensor, Front Steering Position Sensor harness is open or shorted, Front Steering Position Sensor circuit poor electrical connection. 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: C0455 GMC indicates Front Steering Position Sensor Circuit.
Common causes: Common causes include Faulty Front Steering Position Sensor, Front Steering Position Sensor harness is open or shorted, Front Steering Position Sensor circuit poor electrical connection.
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 12,360

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 Jul 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0455 GMC Description

The Electronic Brake Control Module (EBCM) receives several inputs from the steering wheel position sensor. Three digital square wave signal inputs are wired directly to the EBCM harness connector, however, only signals A and B are used or monitored. The failure of the index pulse signal does not effect vehicle Stability Enhancement System (VSES) function. The EBCM also receives an analog steering wheel position input on the steering wheel position sensor signal 1 circuit. Ignition voltage is supplied to the digital portion of the steering wheel position sensor. The analog portion of the steering wheel position sensor is supplied a 5-volt reference from the EBCM.

OBDII Code C0455 GMC - Front Steering Position Sensor Circuit - AutoCodes.com — C0455 GMC Code - Front Steering Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C0455 GMC?

Faulty Front Steering Position Sensor
Front Steering Position Sensor harness is open or shorted
Front Steering Position Sensor circuit poor electrical connection

How to Fix the DTC C0455 GMC?

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 C0455 GMC 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 C0455 GMC code?

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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 C0455 GMC Code

1. What are the common symptoms of OBDII code C0455 GMC (Front Steering Position Sensor Circuit)?

- Common symptoms include the ABS light or traction control light being illuminated on the dashboard, erratic steering behavior, and potential loss of stability control.

2. What are the possible causes of OBDII code C0455 GMC?

- Possible causes include a faulty front steering position sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the electronic stability control system.

3. How can I diagnose the issue related to OBDII code C0455 GMC?

- Diagnosis typically involves using a professional OBDII scanner to read the code, inspecting the front steering position sensor and its wiring for any visible damage, and conducting a thorough inspection of the stability control system.

4. Can I continue driving my vehicle with OBDII code C0455 GMC present?

- It is not recommended to continue driving the vehicle with this code present, as it may affect the performance of the electronic stability control system and compromise safety.

5. How can I repair OBDII code C0455 GMC?

- Repair options may include replacing the front steering position sensor, repairing or replacing damaged wiring or connectors in the sensor circuit, or addressing any issues within the stability control system.

6. Are there any DIY tips for troubleshooting OBDII code C0455 GMC?

- DIY tips may include checking for loose or damaged wiring, ensuring all connectors are securely attached, and consulting the vehicle's service manual for specific diagnostic procedures.

7. Can weather conditions affect the occurrence of OBDII code C0455 GMC?

- Extreme weather conditions, such as excessive heat or moisture, can potentially impact the front steering position sensor circuit and trigger the code. It is essential to keep the sensor and its connections protected.

8. How long does it typically take to repair OBDII code C0455 GMC?

- The repair time can vary depending on the exact cause of the code and the extent of the damage. In general, it may take a few hours to a full day to diagnose and repair the issue.

9. Will resetting the OBDII code C0455 GMC make it go away permanently?

- Resetting the code may temporarily clear the dashboard lights, but if the underlying issue is not addressed and repaired, the code is likely to reappear once the system detects the problem again.

10. Is it necessary to visit a mechanic for OBDII code C0455 GMC, or can I fix it myself?

- While some DIY troubleshooting steps can be taken, it is recommended to consult a professional mechanic for accurate diagnosis and repair of OBDII code C0455 GMC to ensure safety and proper functioning of the vehicle.