AutoCodes – Toyota – B2274 2015 Toyota RAV4

B2274 2015 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 2015 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 192

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 2015 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 2015 Toyota RAV4 - ACC Monitor Malfunction - AutoCodes.com — B2274 2015 Toyota RAV4 Code - ACC Monitor Malfunction

What does this mean?

What are the Possible Causes of the DTC B2274 2015 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 2015 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 2015 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 2015 Toyota RAV4 code?

Need more information on how to fix the B2274 2015 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2274 2015 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 2015 Toyota RAV4 Code

What does the OBDII code B2274 mean for a 2015 Toyota RAV4?

The B2274 code indicates an ACC (Accessory) Monitor Malfunction, which relates to issues in the accessory monitoring system of the vehicle.

What are common symptoms of the B2274 code in a Toyota RAV4?

Symptoms may include difficulty starting the vehicle, accessory systems not functioning properly, or warning lights illuminating on the dashboard.

What causes the B2274 code to appear in a 2015 Toyota RAV4?

The code is typically caused by a malfunction in the accessory relay, wiring issues, or a problem with the ACC monitor circuit.

Can a weak or dead battery trigger the B2274 code?

Yes, a weak or dead battery can cause this code if the accessory system is unable to receive sufficient power.

How can I diagnose the B2274 ACC Monitor Malfunction code?

Start by inspecting the accessory relay, wiring, and connectors for damage or corrosion, and check for proper voltage in the ACC circuit using a multimeter.

Is the B2274 code a serious issue in a Toyota RAV4?

While it may not immediately affect drivability, it can cause inconvenience and lead to accessory system failures that should be repaired promptly.

Can I clear the B2274 code without fixing the underlying issue?

Clearing the code without addressing the issue may temporarily remove the warning, but the malfunction will likely cause the code to reappear.

What repairs are commonly needed to fix the B2274 code?

Repairs may involve replacing a faulty accessory relay, repairing damaged wiring, or addressing issues within the ACC monitor circuit.

Can faulty wiring in the ACC circuit cause other problems in the vehicle?

Yes, damaged or shorted wiring in the ACC circuit can lead to accessory failures and potentially affect related electrical systems.

Should I take my 2015 Toyota RAV4 to a professional mechanic for the B2274 code?

If you're unsure about diagnosing or repairing the issue yourself, consulting a professional mechanic is recommended for accurate troubleshooting and repair.