AutoCodes – Pontiac – C0146 Pontiac

C0146 Pontiac Code - Left TCS Solenoid #2 Circuit Malfunction

Quick Answer

The isolation and prime valve solenoid circuits are supplied with battery power when the ignition is in the ON position. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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: C0146 Pontiac indicates Left TCS Solenoid #2 Circuit Malfunction.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 1,111

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0146 Pontiac Description

The isolation and prime valve solenoid circuits are supplied with battery power when the ignition is in the ON position. The Electronic Brake Control Module (EBCM) controls the valve functions by grounding the circuit when necessary. The solenoid valve circuit and the solenoid coil are internal to the EBCM. No part of the solenoid circuit is diagnosable external to the EBCM. The DTC sets when there is a malfunction in the solenoid circuit internal to the EBCM only.

OBDII Code C0146 Pontiac - Left TCS Solenoid #2 Circuit Malfunction - AutoCodes.com — C0146 Pontiac Code - Left TCS Solenoid #2 Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC C0146 Pontiac?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module (EBCM) harness is open or shorted
Electronic Brake Control Module (EBCM) circuit poor electrical connection

How to Fix the DTC C0146 Pontiac?

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 C0146 Pontiac 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 C0146 Pontiac Code

1. What are common symptoms of OBDII code C0146 Pontiac (Left TCS Solenoid #2 Circuit Malfunction)?

Symptoms may include the traction control system light being illuminated on the dashboard, traction control system not functioning properly, and potential issues with vehicle stability during driving.

2. What are possible causes of OBDII code C0146 Pontiac?

Common causes may include a faulty TCS solenoid #2, damaged wiring or connectors in the TCS solenoid circuit, or issues with the traction control system module.

3. How can I diagnose the OBDII code C0146 on my Pontiac?

Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the TCS solenoid #2 and its wiring for any visible damage, and conducting electrical tests to pinpoint the exact cause of the malfunction.

4. Can I drive my Pontiac with OBDII code C0146 present?

It is not recommended to drive the vehicle with this code present, as it may affect the proper functioning of the traction control system, potentially compromising vehicle stability and safety.

5. How can I repair OBDII code C0146 on my Pontiac?

Repair options may include replacing the faulty TCS solenoid #2, repairing or replacing damaged wiring or connectors, or resetting the traction control system module after addressing the issue.

6. Will clearing the OBDII code C0146 Pontiac make the problem go away?

Clearing the code without addressing the underlying issue will not fix the problem. It is important to diagnose and repair the root cause of the malfunction to ensure proper functioning of the traction control system.

7. Is it possible to prevent OBDII code C0146 from occurring in the future?

Routine maintenance of the traction control system, such as checking for loose connections and ensuring proper component functionality, can help prevent this code from reoccurring in the future.

8. Can a DIY enthusiast repair OBDII code C0146 on a Pontiac?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides, but it is recommended to seek professional assistance for accurate diagnosis and repair.

9. What implications does OBDII code C0146 have on vehicle emissions?

This code does not directly affect vehicle emissions, but it may impact the overall performance and safety of the vehicle, leading to potential issues with emissions if left unresolved.

10. How long does it typically take to repair OBDII code C0146 on a Pontiac?

The repair time can vary depending on the exact cause of the malfunction, but it may take anywhere from a few hours to a full day to diagnose and fix the issue properly.