AutoCodes – Toyota – C1426 2018 Toyota RAV4

C1426 2018 Toyota RAV4 Code - Stop Light Switch Off Stuck Malfunction

Quick Answer

The Skid Control ECU (Brake Actuator Assembly) receives stop light switch signals and uses them to determine whether or not the brakes are applied. Common causes include Blown Stop Light Switch Fuse, Faulty Stop Light Switch, Stop Light Switch harness is open or shorted. 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: C1426 2018 Toyota RAV4 indicates Stop Light Switch Off Stuck Malfunction.
Common causes: Common causes include Blown Stop Light Switch Fuse, Faulty Stop Light Switch, Stop Light Switch harness is open or shorted.
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 292

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 29, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1426 2018 Toyota RAV4 Description

The Skid Control ECU (Brake Actuator Assembly) receives stop light switch signals and uses them to determine whether or not the brakes are applied. The Skid Control ECU has a detection circuit that it uses to detect a short in the stop light input line or the ground line of the stop light circuit with the stop light switch on (brake pedal depressed). If the Skid Control ECU detects a short in this circuit, it will store the Diagnostic Trouble Code (DTC) C1426.

OBDII Code C1426 2018 Toyota RAV4 - Stop Light Switch Off Stuck Malfunction - AutoCodes.com — C1426 2018 Toyota RAV4 Code - Stop Light Switch Off Stuck Malfunction

What does this mean?

What are the Possible Causes of the DTC C1426 2018 Toyota RAV4?

Blown Stop Light Switch Fuse
Faulty Stop Light Switch
Stop Light Switch harness is open or shorted
Stop Light Switch circuit poor electrical connection
Faulty Skid Control ECU (Brake Actuator Assembly)

How to Fix the DTC C1426 2018 Toyota RAV4?

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 C1426 2018 Toyota RAV4 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 C1426 2018 Toyota RAV4 code?

Need more information on how to fix the C1426 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 C1426 2018 Toyota RAV4 Code

1. What does the OBDII code C1426 mean on a 2018 Toyota RAV4?

The code C1426 indicates a "Stop Light Switch Off Stuck Malfunction," meaning the brake light switch may not be functioning properly when the brake pedal is released.

2. What are the common symptoms of the C1426 code?

Symptoms may include malfunctioning brake lights, ABS warning light illumination, cruise control issues, and reduced functionality of advanced driver assistance systems.

3. What causes the C1426 code on a 2018 Toyota RAV4?

The most common causes are a faulty brake light switch, misaligned brake pedal, damaged wiring, or a problem in the brake light switch circuit.

4. Can I drive my 2018 Toyota RAV4 with the C1426 code?

While the vehicle may still be drivable, it is not recommended due to potential safety risks, such as non-functional brake lights or compromised ABS and cruise control.

5. How do I fix the C1426 code on my Toyota RAV4?

Repairs typically involve replacing or adjusting the brake light switch, inspecting and repairing wiring or connectors, and clearing the fault code with an OBDII scanner.

6. Where is the brake light switch located on the 2018 Toyota RAV4?

The brake light switch is located near the top of the brake pedal assembly, under the dashboard.

7. How can I test the brake light switch for the C1426 code?

You can test the switch using a multimeter to check for proper continuity when the brake pedal is pressed and released.

8. Will a faulty brake light switch affect other systems in the car?

Yes, a malfunctioning brake light switch can impact systems like ABS, traction control, and cruise control, as these rely on accurate brake pedal position data.

9. Does the C1426 code require professional diagnosis?

While some DIYers may handle it, professional diagnosis is recommended to ensure the brake light switch and related systems are thoroughly inspected and repaired.

10. How much does it cost to repair the C1426 code on a Toyota RAV4?

The cost can vary but typically ranges from $50 to $150 for brake light switch replacement, plus diagnostic and labor fees if done professionally.