AutoCodes – Cadillac – C0046 Cadillac

C0046 Cadillac 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 Cadillac 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 2,078

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

What does this mean?

What are the Possible Causes of the DTC C0046 Cadillac?

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 Cadillac?

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 Cadillac 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.

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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 C0046 Cadillac Code

1. What are the common symptoms of OBDII code C0046 on a Cadillac?

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

2. What does the OBDII code C0046 indicating "Left Rear Wheel Speed Sensor Circuit Range Performance" mean?

- This code indicates a problem with the left rear wheel speed sensor circuit, specifically related to its performance range.

3. What are the possible causes of OBDII code C0046 on a Cadillac?

- Possible causes include a faulty wheel speed sensor, damaged wiring or connectors, sensor misalignment, or issues with the ABS module.

4. How can I diagnose the source of OBDII code C0046 on my Cadillac?

- Diagnosing the code typically involves inspecting the left rear wheel speed sensor, checking its wiring and connectors, and using a diagnostic scanner to analyze the ABS system data.

5. Can I still drive my Cadillac with OBDII code C0046 present?

- It is generally not recommended to drive a vehicle with this code present, as it may affect the proper functioning of the ABS and traction control systems.

6. How can I repair OBDII code C0046 on my Cadillac?

- Repair options may include replacing the left rear wheel speed sensor, repairing or replacing damaged wiring, ensuring proper sensor alignment, or addressing any issues with the ABS module.

7. Are there any DIY tips for addressing OBDII code C0046 on a Cadillac?

- DIY tips may include checking and cleaning the sensor connections, ensuring proper sensor installation, and conducting a visual inspection of the sensor and its components.

8. How much does it typically cost to repair OBDII code C0046 on a Cadillac?

- Repair costs can vary depending on the specific issue causing the code, but expenses may include the cost of a new wheel speed sensor, labor for diagnostics and repairs, and potential ABS module reprogramming.

9. Will resetting the OBDII code C0046 on my Cadillac make the issue go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to return once the system detects the problem again.

10. How can I prevent OBDII code C0046 from reoccurring on my Cadillac?

- Regularly inspecting and maintaining the wheel speed sensors, ensuring proper installation, and addressing any warning signs promptly can help prevent the recurrence of this code.