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Engine-Codes – Generic – B2274

B2274 Code - ACC Monitor Malfunction

Quick Answer

The B2274 code indicates an issue with the ACC (Adaptive Cruise Control) monitor system in the vehicle. Common causes include Faulty ACC sensors, Damaged wiring or connectors in the ACC system, Malfunctioning ACC control module. 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 indicates ACC Monitor Malfunction.
Common causes
Common causes include Faulty ACC sensors, Damaged wiring or connectors in the ACC system, Malfunctioning ACC control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B2274 Description

The B2274 code indicates an issue with the ACC (Adaptive Cruise Control) monitor system in the vehicle. The ACC system is designed to automatically adjust the vehicle's speed to maintain a safe following distance from the car ahead. When this system malfunctions, it can affect the vehicle's performance and safety features.

OBDII Code B2274 - ACC Monitor Malfunction
B2274 Code - ACC Monitor Malfunction

Common Causes of B2274

  1. Faulty ACC sensors
  2. Damaged wiring or connectors in the ACC system
  3. Malfunctioning ACC control module
  4. Software glitches in the ACC system
  5. Environmental factors affecting sensor performance (e.g., dirt, debris)

Symptoms of B2274

  1. Inoperative or erratic cruise control function
  2. Check engine light illuminated
  3. Poor fuel efficiency
  4. ACC system error message on the dashboard
  5. Unusual braking behavior when using cruise control

How to Fix B2274

  1. Diagnose the ACC system using a diagnostic tool to pinpoint the exact cause of the malfunction.
  2. Inspect the ACC sensors, wiring, and connectors for any signs of damage or corrosion.
  3. Test the ACC control module for proper functionality or potential software issues.
  4. Clear the error code and reset the system to see if the issue persists.
  5. Replace any faulty components such as sensors, wiring, or the control module as needed.

Cost to Fix B2274

The cost of repairing a B2274 ACC monitor malfunction can vary depending on the extent of the issue and the specific parts that need replacement. On average, the repair cost can range from $200 to $500, including parts and labor. However, it's essential to note that prices may vary based on the vehicle's make and model, the location of the repair shop, and the expertise of the technicians. It's recommended to consult with a professional mechanic for a more accurate estimate based on your specific situation.

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Code B2274 Information for Specific Makes

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 Code

1. What does the OBDII code B2274 mean?

B2274 indicates an ACC (Accessory) Monitor Malfunction, which refers to an issue in the accessory power system or related circuits.

2. What are the common symptoms of code B2274?

Symptoms may include inoperative accessory features like power windows, the radio, or interior lights, and intermittent electrical malfunctions.

3. What causes the B2274 code to be triggered?

Common causes include a faulty accessory relay, damaged wiring, a blown fuse, or a malfunctioning Body Control Module (BCM).

4. How is the B2274 code diagnosed?

A mechanic will inspect the accessory wiring, check for blown fuses, test the accessory relay, and use a scan tool to verify system signals and BCM functionality.

5. Can I drive my car with the B2274 code active?

Yes, you can usually drive with this code, but some accessory functions may not work properly, which can be inconvenient or unsafe depending on the affected systems.

6. How do I fix the B2274 code?

Repairs may include replacing a blown fuse, repairing damaged wiring, replacing a faulty relay, or reprogramming or replacing the BCM if necessary.

7. How much does it cost to fix the B2274 code?

Repair costs vary depending on the issue but typically range from $50 for a simple fuse replacement to $300 or more for BCM repairs or replacements.

8. Can a dead battery cause the B2274 code?

Yes, a weak or dead battery can cause accessory system malfunctions, which may trigger the B2274 code.

9. Will clearing the B2274 code fix the problem permanently?

Clearing the code may turn off the warning temporarily, but the underlying issue must be addressed to prevent the code from returning.

10. Is the B2274 code common across all vehicle makes and models?

No, this code is more common in certain manufacturers and vehicles with advanced accessory monitoring systems. Always check your vehicle’s specific repair manual for guidance.

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