C0146 Buick 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 Buick 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.
Code C0146 Buick Description
What are the Possible Causes of the DTC C0146 Buick?
- 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 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 C0146 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.
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Frequently Asked Questions about C0146 Buick Code
1. What does the OBDII code C0146 mean on a Buick?
Code C0146 indicates a malfunction in the Left Traction Control System (TCS) Solenoid #2 Circuit.
2. What are the symptoms of code C0146 in a Buick?
Common symptoms include the ABS or traction control warning light on, reduced traction control functionality, and possible loss of stability assistance.
3. What causes the C0146 code to appear on a Buick?
Causes may include a faulty solenoid, damaged wiring or connectors in the TCS circuit, or a malfunctioning ABS control module.
4. Can I drive my Buick with the C0146 code active?
While the car may still be drivable, reduced traction control could make driving unsafe in slippery conditions, so repairs should be made promptly.
5. How is the C0146 code diagnosed on a Buick?
A mechanic will use a scan tool to read the code, inspect the left TCS solenoid and its circuit for damage, and test the solenoid for proper operation.
6. What repairs fix the C0146 code in a Buick?
Repairs may include replacing the left TCS solenoid, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ABS control module.
7. How much does it cost to repair the C0146 code on a Buick?
The cost varies depending on the issue but typically ranges from $150 to $500, including parts and labor.
8. Can a low battery cause the C0146 code in a Buick?
A weak or low battery can cause electrical issues, but it’s not a common cause for this specific code.
9. How can I prevent the C0146 code from recurring in my Buick?
Regular maintenance of the ABS and traction control system, including inspecting wiring and connectors, can help prevent this code.
10. Does clearing the C0146 code fix the problem in a Buick?
Clearing the code may turn off the warning light temporarily, but the underlying issue must be repaired to prevent the code from returning.
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