B2274 Toyota 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 Toyota 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.
Code B2274 Toyota Description
What are the Possible Causes of the DTC B2274 Toyota?
- 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 Toyota?
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 Toyota 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 Toyota code?
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Need Help with the Code?
Get the B2274 Toyota code diagnosed by a professional: Find a repair shop in your area
Information for Specific Toyota Models
- B2274 2013 Toyota RAV4 — ACC Monitor Malfunction
- B2274 2014 Toyota RAV4 — ACC Monitor Malfunction
- B2274 2015 Toyota RAV4 — ACC Monitor Malfunction
- B2274 2016 Toyota RAV4 — ACC Monitor Malfunction
- B2274 2017 Toyota RAV4 — ACC Monitor Malfunction
- B2274 2018 Toyota RAV4 — ACC Monitor Malfunction
Frequently Asked Questions about B2274 Toyota Code
1. What are the common symptoms of OBDII code B2274 Toyota ACC Monitor Malfunction?
- Common symptoms include the malfunction indicator light (MIL) turning on, issues with the adaptive cruise control system, and potential loss of cruise control functionality.
2. What can cause the OBDII code B2274 Toyota ACC Monitor Malfunction?
- The code B2274 can be caused by a faulty ACC unit, wiring issues, a damaged cruise control switch, or a malfunctioning radar sensor.
3. How can I diagnose the OBDII code B2274 Toyota ACC Monitor Malfunction?
- Diagnosis involves using an OBDII scanner to read the code, checking the cruise control system components for any visible damage, and testing the radar sensor's functionality.
4. Can I still drive my Toyota with the OBDII code B2274 ACC Monitor Malfunction?
- While the vehicle may still be operable, it is recommended to address the issue promptly to avoid potential safety concerns and further damage to the cruise control system.
5. What are some repair tips for fixing the OBDII code B2274 Toyota ACC Monitor Malfunction?
- Repair tips may include checking and repairing any damaged wiring, replacing the faulty ACC unit or cruise control switch, recalibrating the radar sensor, and clearing the code with an OBDII scanner.
6. How much does it typically cost to repair the OBDII code B2274 Toyota ACC Monitor Malfunction?
- The cost of repair can vary depending on the specific issue causing the code, the parts needed for replacement, and labor costs. It is recommended to consult a professional for an accurate estimate.
7. Can resetting the OBDII code B2274 Toyota ACC Monitor Malfunction fix the issue temporarily?
- Resetting the code may temporarily turn off the MIL, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.
8. Is it possible to prevent the OBDII code B2274 Toyota ACC Monitor Malfunction from occurring?
- While some causes of the code may be unavoidable, regular maintenance checks, ensuring all components are in good condition, and addressing any warning signs promptly can help prevent this issue.
9. Are there any safety concerns associated with the OBDII code B2274 Toyota ACC Monitor Malfunction?
- Yes, safety concerns may arise due to potential issues with the cruise control system, such as unexpected acceleration or deceleration, which could pose risks while driving.
10. How urgent is it to address the OBDII code B2274 Toyota ACC Monitor Malfunction?
- It is recommended to address the issue promptly to ensure the proper functioning of the cruise control system and maintain safe driving conditions.
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