AutoCodes – Scion – C15C4 Scion

C15C4 Scion Code - Steering Angle Signal

Quick Answer

Signal transmission between the Steering Control ECU and steering angle sensor is performed via serial communication. Common causes include Faulty Steering Angle Sensor, Steering Angle Sensor harness is open or shorted, Steering Angle 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: C15C4 Scion indicates Steering Angle Signal.
Common causes: Common causes include Faulty Steering Angle Sensor, Steering Angle Sensor harness is open or shorted, Steering Angle 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 744

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 Nov 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C15C4 Scion Description

Signal transmission between the Steering Control ECU and steering angle sensor is performed via serial communication. If an error occurs between them in serial communication, the ECU will store the Diagnostic Trouble Code (DTC) C15C4.

OBDII Code C15C4 Scion - Steering Angle Signal - AutoCodes.com — C15C4 Scion Code - Steering Angle Signal

What does this mean?

What are the Possible Causes of the DTC C15C4 Scion?

Faulty Steering Angle Sensor
Steering Angle Sensor harness is open or shorted
Steering Angle Sensor circuit poor electrical connection
Faulty Steering Control ECU

How to Fix the DTC C15C4 Scion?

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 C15C4 Scion 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 C15C4 Scion 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 C15C4 Scion Code

1. What are common symptoms of the OBDII code C15C4 in a Scion related to the Steering Angle Signal?

- Common symptoms include the vehicle's stability control and traction control systems becoming disabled, illuminated warning lights on the dashboard, and potential steering issues.

2. What are the possible causes of the C15C4 OBDII code in a Scion?

- The code C15C4 typically indicates a fault with the steering angle sensor, wiring issues, or a malfunction within the electronic stability control system.

3. How can I diagnose the C15C4 code related to the Steering Angle Signal in my Scion?

- Diagnosing the code involves using an OBDII scanner to retrieve the code, inspecting the steering angle sensor and its wiring for damage, and conducting a comprehensive scan of the vehicle's stability control system.

4. Can I still drive my Scion with the C15C4 code present?

- It is not recommended to drive the vehicle with the C15C4 code active, as it may affect the functionality of crucial safety systems like stability control. It's best to address the issue promptly.

5. How can I repair the Steering Angle Signal issue causing the C15C4 code in my Scion?

- Repairing the issue may involve replacing the faulty steering angle sensor, repairing damaged wiring, or recalibrating the system. It's advisable to consult a professional mechanic for accurate diagnosis and repair.

6. Are there any DIY tips for troubleshooting the C15C4 code in a Scion?

- While basic checks like inspecting the wiring connections and ensuring they are secure can be performed, diagnosing and repairing the Steering Angle Signal issue typically requires specialized equipment and expertise.

7. Will resetting the OBDII codes clear the C15C4 code in my Scion?

- Resetting the codes may temporarily clear the C15C4 code, but if the underlying issue with the Steering Angle Signal persists, the code is likely to reappear once the vehicle is driven.

8. Is the C15C4 code related to the Steering Angle Signal a common problem in Scion vehicles?

- While not extremely common, issues with the steering angle sensor and related systems can occur in Scion vehicles, triggering the C15C4 OBDII code.

9. Can a malfunction in the Steering Angle Signal system affect other safety features in my Scion?

- Yes, a malfunction in the Steering Angle Signal system can impact various safety features like stability control, traction control, and potentially affect the overall handling and stability of the vehicle.

10. How much does it typically cost to repair the Steering Angle Signal issue causing the C15C4 code in a Scion?

- 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.