AutoCodes – Generic – C146B

C146B Code - SRL Solenoid Circuit

Quick Answer

The SRL Solenoid turns on when the signal is received from the Skid Control ECU (Brake Actuator Assembly) and they control the pressure acting on the wheel cylinders to control the braking force. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly). 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: C146B indicates SRL Solenoid Circuit.
Common causes: Common causes include Faulty Skid Control ECU (Brake Actuator Assembly).
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 5,056

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 Jan 18, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C146B Description

The SRL Solenoid turns on when the signal is received from the Skid Control ECU (Brake Actuator Assembly) and they control the pressure acting on the wheel cylinders to control the braking force. The Skid Control ECU (Brake Actuator Assembly) monitors the SRL Solenoid. The Skid Control ECU (Brake Actuator Assembly) sets the Diagnostic Trouble Code (DTC) when the SRL Solenoid is not to factory specifications.

OBDII Code C146B - SRL Solenoid Circuit - AutoCodes.com — C146B Code - SRL Solenoid Circuit

What does this mean?

What are the Possible Causes of the DTC C146B?

Faulty Skid Control ECU (Brake Actuator Assembly)

How to Fix the DTC C146B?

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 C146B 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 C146B code?

Need more information on how to fix the C146B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C146B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C146B Lexus — SRL Solenoid Circuit
C146B Scion — SRL Solenoid Circuit
C146B Toyota — SRL Solenoid Circuit

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 C146B Code

1. What are the common symptoms of OBDII code C146B (SRL Solenoid Circuit)?

The common symptoms of OBDII code C146B include engine misfires, rough idling, poor acceleration, and illuminated Check Engine light.

2. What could cause OBDII code C146B to trigger?

The trigger of OBDII code C146B (SRL Solenoid Circuit) is often due to a faulty SRL solenoid, wiring issues, or a malfunctioning control module.

3. How can I diagnose the source of OBDII code C146B?

To diagnose the source of OBDII code C146B, it is recommended to perform a thorough inspection of the SRL solenoid, check the wiring for any damage or loose connections, and use a diagnostic scanner to analyze the control module.

4. What are some repair tips for addressing OBDII code C146B?

Repair tips for OBDII code C146B may include replacing the faulty SRL solenoid, repairing or replacing damaged wiring, and resetting the fault codes with a diagnostic scanner after the repairs are completed.

5. Can I continue driving with OBDII code C146B present?

It is not recommended to continue driving with OBDII code C146B present, as it can lead to further engine problems and potential damage if left unresolved.

6. How much does it typically cost to repair OBDII code C146B?

The cost of repairing OBDII code C146B can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor.

7. Are there any preventative measures to avoid OBDII code C146B in the future?

To prevent OBDII code C146B from occurring in the future, it is advisable to regularly maintain your vehicle, address any engine issues promptly, and follow the manufacturer's recommended service schedule.

8. Can a DIY enthusiast fix OBDII code C146B at home?

Depending on your automotive knowledge and skills, some DIY enthusiasts may be able to address OBDII code C146B at home by following repair guides and using the necessary tools.

9. Is OBDII code C146B a serious issue that requires immediate attention?

While OBDII code C146B may not always indicate a critical problem, it is still important to address it promptly to prevent potential engine damage and ensure optimal vehicle performance.

10. How long does it take to repair OBDII code C146B?

The repair time for OBDII code C146B can vary based on the specific issue and your mechanic's schedule, but it typically takes a few hours to complete the necessary repairs.