AutoCodes – Toyota – B2251 2017 Toyota RAV4

B2251 2017 Toyota RAV4 Code - Back Door Closer Switch Malfunction

Quick Answer

The Multiplex Network Door ECU receives signals from the latch switch, sector switch, pawl switch, and back door courtesy switch, which are built into the Back Door Lock Assembly. Common causes include Faulty Back Door Lock Assembly, Back Door Lock Assembly harness is open or shorted, Back Door Lock Assembly 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: B2251 2017 Toyota RAV4 indicates Back Door Closer Switch Malfunction.
Common causes: Common causes include Faulty Back Door Lock Assembly, Back Door Lock Assembly harness is open or shorted, Back Door Lock Assembly 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 572

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 Dec 10, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2251 2017 Toyota RAV4 Description

The Multiplex Network Door ECU receives signals from the latch switch, sector switch, pawl switch, and back door courtesy switch, which are built into the Back Door Lock Assembly. Based on these switch signals, the latch position of the back door lock assembly is determined. The Diagnostic Trouble Code (DTC) sets when a malfunction is detected in position information from the back door courtesy switch within a specified amount of time, while the back door closer is operating.

OBDII Code B2251 2017 Toyota RAV4 - Back Door Closer Switch Malfunction - AutoCodes.com — B2251 2017 Toyota RAV4 Code - Back Door Closer Switch Malfunction

What does this mean?

What are the Possible Causes of the DTC B2251 2017 Toyota RAV4?

Faulty Back Door Lock Assembly
Back Door Lock Assembly harness is open or shorted
Back Door Lock Assembly circuit poor electrical connection
Faulty Multiplex Network Door ECU

How to Fix the DTC B2251 2017 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 B2251 2017 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 B2251 2017 Toyota RAV4 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 B2251 2017 Toyota RAV4 Code

1. What does code B2251 mean on a 2017 Toyota RAV4?

Code B2251 indicates a malfunction in the back door closer switch, which is part of the power liftgate system.

2. What are the symptoms of code B2251 in a 2017 Toyota RAV4?

Common symptoms include the power liftgate not opening or closing properly, error messages on the dashboard, or the liftgate operating intermittently.

3. What causes code B2251 in a Toyota RAV4?

This code can be triggered by a faulty back door closer switch, damaged wiring or connectors, or an issue with the power liftgate control module.

4. How do I diagnose code B2251 on my 2017 Toyota RAV4?

Start by inspecting the back door closer switch, wiring, and connectors for damage or corrosion. Use a scan tool to check for related codes and monitor sensor signals.

5. Can I drive my 2017 Toyota RAV4 with code B2251?

Yes, you can drive with this code, but the power liftgate may not function properly, which could be inconvenient.

6. How do I fix code B2251 on a Toyota RAV4?

Repairs may include replacing the back door closer switch, repairing damaged wiring or connectors, or reprogramming the power liftgate control module if necessary.

7. How much does it cost to fix code B2251 on a 2017 Toyota RAV4?

The repair cost can vary depending on the issue, but replacing the back door closer switch typically costs between $100 and $300, including parts and labor.

8. Can I reset code B2251 without fixing the issue?

You can clear the code with an OBDII scanner, but it will likely return if the underlying problem is not resolved.

9. Is code B2251 a common issue in the 2017 Toyota RAV4?

While not extremely common, this code can occur in vehicles with frequent power liftgate use or exposure to moisture that affects the switch or wiring.

10. How can I prevent code B2251 in my Toyota RAV4?

Regularly inspect and clean the back door closer switch and surrounding area to prevent dirt or moisture buildup, and avoid slamming the liftgate.