AutoCodes – Toyota – B2274 2018 Toyota RAV4

B2274 2018 Toyota RAV4 Code - ACC Monitor Malfunction

Quick Answer

This Diagnostic Trouble Code (DTC) is stored when a malfunction in the ACC output circuit is detected. Common causes include Faulty ACC Relay, Faulty Certification ECU (Smart Key ECU Assembly), Certification ECU 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: B2274 2018 Toyota RAV4 indicates ACC Monitor Malfunction.
Common causes: Common causes include Faulty ACC Relay, Faulty Certification ECU (Smart Key ECU Assembly), Certification ECU 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 221

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 13, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2274 2018 Toyota RAV4 Description

This Diagnostic Trouble Code (DTC) is stored when a malfunction in the ACC output circuit is detected. The ACC output circuit is the circuit that goes from the ACC output terminal of the Certification ECU (Smart Key ECU Assembly) to the ACC Relay.

OBDII Code B2274 2018 Toyota RAV4 - ACC Monitor Malfunction - AutoCodes.com — B2274 2018 Toyota RAV4 Code - ACC Monitor Malfunction

What does this mean?

What are the Possible Causes of the DTC B2274 2018 Toyota RAV4?

Faulty ACC Relay
Faulty Certification ECU (Smart Key ECU Assembly)
Certification ECU harness is open or shorted
Certification ECU circuit poor electrical connection

How to Fix the DTC B2274 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 B2274 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 B2274 2018 Toyota RAV4 code?

Need more information on how to fix the B2274 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2274 2018 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area

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 B2274 2018 Toyota RAV4 Code

1. What is OBDII code B2274 in a 2018 Toyota RAV4?

- OBDII code B2274 in a 2018 Toyota RAV4 indicates an ACC (Adaptive Cruise Control) Monitor Malfunction.

2. What are the common symptoms of ACC Monitor Malfunction (B2274) in a 2018 Toyota RAV4?

- Common symptoms include the adaptive cruise control system not functioning properly, warning lights on the dashboard, and potential loss of cruise control functionality.

3. What are the possible causes of the ACC Monitor Malfunction (B2274) in a 2018 Toyota RAV4?

- Causes can include faulty sensors, wiring issues, a malfunctioning control module, or software glitches within the adaptive cruise control system.

4. How can I diagnose the ACC Monitor Malfunction (B2274) in my 2018 Toyota RAV4?

- Diagnosing the issue typically involves using an OBDII scanner to retrieve the specific error code, checking the system components, and performing a thorough inspection of the adaptive cruise control system.

5. Can I still drive my 2018 Toyota RAV4 with the ACC Monitor Malfunction (B2274) code?

- It is generally safe to drive the vehicle with this code, but it is recommended to have the issue diagnosed and repaired as soon as possible to ensure proper functionality of the adaptive cruise control system.

6. How can I repair the ACC Monitor Malfunction (B2274) in my 2018 Toyota RAV4?

- Repair options may include replacing faulty sensors, repairing wiring issues, resetting the control module, updating software, or seeking assistance from a professional mechanic for a comprehensive diagnosis and repair.

7. Is the ACC Monitor Malfunction (B2274) a common issue in 2018 Toyota RAV4 vehicles?

- While not extremely common, the ACC Monitor Malfunction (B2274) can occur in 2018 Toyota RAV4 vehicles due to various factors, including sensor failures or electrical issues.

8. Can I reset the ACC Monitor Malfunction (B2274) code in my 2018 Toyota RAV4?

- Resetting the code can be done using an OBDII scanner, but it is recommended to address the underlying issue causing the code to prevent it from reoccurring.

9. Will the ACC Monitor Malfunction (B2274) code cause my 2018 Toyota RAV4 to fail an emissions test?

- The ACC Monitor Malfunction (B2274) code itself may not cause the vehicle to fail an emissions test, but it is important to address the issue to ensure the adaptive cruise control system functions correctly.

10. How much does it typically cost to repair the ACC Monitor Malfunction (B2274) in a 2018 Toyota RAV4?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve parts replacement, labor costs, and diagnostic fees, which could range from a few hundred to over a thousand dollars.