AutoCodes – Buick – C0046 Buick

C0046 Buick Code - Left Rear Wheel Speed Sensor Circuit Range Performance

Quick Answer

The Wheel Speed Sensor (WSS) receives ignition voltage from the Electronic Brake Control Module (EBCM) and provides a DC square wave signal back to the module. Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear Wheel Speed 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: C0046 Buick indicates Left Rear Wheel Speed Sensor Circuit Range Performance.
Common causes: Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear Wheel Speed 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 2,177

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 May 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0046 Buick Description

The Wheel Speed Sensor (WSS) receives ignition voltage from the Electronic Brake Control Module (EBCM) and provides a DC square wave signal back to the module. As the wheel spins, the EBCM uses the frequency of the square wave signal to calculate the wheel speed.

OBDII Code C0046 Buick - Left Rear Wheel Speed Sensor Circuit Range Performance - AutoCodes.com — C0046 Buick Code - Left Rear Wheel Speed Sensor Circuit Range Performance

What does this mean?

What are the Possible Causes of the DTC C0046 Buick?

Faulty Left Rear Wheel Speed Sensor
Left Rear Wheel Speed Sensor harness is open or shorted
Left Rear Wheel Speed Sensor circuit poor electrical connection

How to Fix the DTC C0046 Buick?

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 C0046 Buick 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 C0046 Buick code?

Need more information on how to fix the C0046 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0046 Buick 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 C0046 Buick Code

1. What are the common symptoms of OBDII code C0046 in a Buick related to the Left Rear Wheel Speed Sensor Circuit Range Performance?

- Common symptoms include ABS warning light illuminated on the dashboard, traction control system malfunction, and potential loss of stability control.

2. What are the possible causes of OBDII code C0046 in a Buick?

- The code C0046 in a Buick can be triggered by a faulty left rear wheel speed sensor, damaged wiring or connectors in the circuit, or issues with the ABS module.

3. How can I diagnose the cause of OBDII code C0046 in my Buick?

- To diagnose the issue, you can start by inspecting the left rear wheel speed sensor and its wiring for any visible damage. Using a diagnostic scanner to read the ABS system codes can also help pinpoint the problem.

4. Can I still drive my Buick with OBDII code C0046 present?

- It is not recommended to drive your Buick with OBDII code C0046 present, as it can affect the proper functioning of the ABS and traction control systems, potentially compromising your safety on the road.

5. How can I repair OBDII code C0046 in my Buick?

- Repairing OBDII code C0046 typically involves replacing the left rear wheel speed sensor, repairing any damaged wiring or connectors, and clearing the fault codes with a diagnostic scanner.

6. Are there any DIY tips for fixing OBDII code C0046 in a Buick?

- While some experienced DIYers may attempt to replace the wheel speed sensor themselves, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is fixed correctly.

7. Is it necessary to reset the ABS system after repairing OBDII code C0046 in a Buick?

- Yes, it is important to reset the ABS system after repairing OBDII code C0046 in a Buick to clear any stored fault codes and ensure proper calibration of the system.

8. Can extreme weather conditions affect the occurrence of OBDII code C0046 in a Buick?

- Yes, extreme weather conditions such as heavy rain, snow, or extreme temperatures can sometimes lead to sensor malfunctions and trigger OBDII code C0046 in a Buick.

9. Will fixing OBDII code C0046 improve the overall performance of my Buick?

- Yes, fixing OBDII code C0046 will help restore the proper functioning of the ABS and traction control systems in your Buick, improving overall safety and performance on the road.

10. How much can I expect to pay for repairing OBDII code C0046 in a Buick?

- The cost of repairing OBDII code C0046 in a Buick can vary depending on the specific cause of the issue, but it generally ranges from $100 to $300 for parts and labor at a repair shop.