AutoCodes – Toyota – C146F Toyota

C146F Toyota Code - Short in ABS Solenoid Relay Circuit

Quick Answer

The Anti-Lock Brake System (ABS) solenoid relay supplies power to the ABS solenoid and TRAC solenoid. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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: C146F Toyota indicates Short in ABS Solenoid Relay Circuit.
Common causes: Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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 2,194

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jan 30, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C146F Toyota Description

The Anti-Lock Brake System (ABS) solenoid relay supplies power to the ABS solenoid and TRAC solenoid. The solenoid relay is turned on 1.5 seconds after the ignition switch is turned to ON and is turned off if an open or short in the solenoid is detected by the self-diagnosis performed when the engine starts running. The ABS solenoid relay is housed in the Skid Control ECU (Brake Actuator Assembly) in the actuator assembly. The Diagnostic Trouble Code (DTC) will be set immediately after the ignition switch to ON and the solenoid relay is OFF, relay contact is ON continuously for 4.5 seconds or more.

OBDII Code C146F Toyota - Short in ABS Solenoid Relay Circuit - AutoCodes.com — C146F Toyota Code - Short in ABS Solenoid Relay Circuit

What does this mean?

What are the Possible Causes of the DTC C146F Toyota?

Faulty Skid Control ECU (Brake Actuator Assembly)
Skid Control ECU harness is open or shorted
Skid Control ECU circuit poor electrical connection

How to Fix the DTC C146F Toyota?

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 C146F Toyota 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 C146F Toyota code?

Need more information on how to fix the C146F Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C146F Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

C146F 2013 Toyota RAV4 — Short in ABS Solenoid Relay Circuit
C146F 2014 Toyota RAV4 — Short in ABS Solenoid Relay Circuit
C146F 2015 Toyota RAV4 — Short in ABS Solenoid Relay Circuit
C146F 2016 Toyota RAV4 — Short in ABS Solenoid Relay Circuit
C146F 2017 Toyota RAV4 — Short in ABS Solenoid Relay Circuit
C146F 2018 Toyota RAV4 — Short in ABS Solenoid Relay 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 C146F Toyota Code

1. What does the OBDII code C146F mean on a Toyota?

C146F indicates a short circuit in the ABS solenoid relay circuit, which is part of the Anti-lock Braking System (ABS).

2. What are the symptoms of code C146F in a Toyota?

Common symptoms include the ABS warning light illuminating, reduced braking performance, or the ABS not functioning properly.

3. What causes the C146F code to appear on a Toyota?

The most common causes are damaged wiring, a faulty ABS solenoid relay, a short circuit, or a malfunctioning ABS control module.

4. Is it safe to drive with the C146F code active?

While the vehicle may still be drivable, the ABS may not function correctly, increasing the risk of wheel lock-up during emergency braking. Itâ€™s best to address the issue promptly.

5. How can I diagnose the C146F code on my Toyota?

Start by inspecting the ABS solenoid relay and its wiring for damage or shorts. Use a multimeter to test circuit continuity and verify the operation of the relay.

6. Can a blown fuse cause the C146F code on a Toyota?

Yes, a blown fuse in the ABS circuit can cause this code if it disrupts the solenoid relayâ€™s electrical supply.

7. How do I fix the C146F code on my Toyota?

Repairs may include replacing a damaged ABS solenoid relay, repairing shorted wiring, or replacing the ABS control module if itâ€™s determined to be faulty.

8. How much does it cost to repair the C146F code on a Toyota?

Repair costs vary depending on the issue, but replacing an ABS solenoid relay typically costs $100â€“$300, while ABS module replacement can range from $500â€“$1,200.

9. Can a weak battery trigger the C146F code on a Toyota?

While unlikely, a weak or failing battery can cause electrical issues that might indirectly contribute to this code. Ensure the battery and charging system are in good condition.

10. Do I need professional help to fix the C146F code on my Toyota?

If youâ€™re comfortable with electrical diagnostics, you can inspect and test components yourself. However, for complex issues or module replacement, professional assistance is recommended.