AutoCodes – Infiniti – B2720 Infiniti

B2720 Infiniti Code - Rear Sonar Sensor Left Outer

Quick Answer

With power and ground supplied to the sonar sensors, the sonar sensors transmit an ultrasonic signal. Common causes include Faulty Rear Sonar Sensor Left Outer, Rear Sonar Sensor Left Outer harness is open or shorted, Rear Sonar Sensor Left Outer 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
B2720 Infiniti indicates Rear Sonar Sensor Left Outer.
Common causes
Common causes include Faulty Rear Sonar Sensor Left Outer, Rear Sonar Sensor Left Outer harness is open or shorted, Rear Sonar Sensor Left Outer 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,491
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 26, 2020
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Code B2720 Infiniti Description

With power and ground supplied to the sonar sensors, the sonar sensors transmit an ultrasonic signal. This signal is reflected back to the sensor by objects large enough and close enough to be detected. The sonar sensors measure the time from the transmitted signal to the time the signal is reflected back and send this information to the Sonar Control Unit. The Sonar Control Unit sets the Diagnostic Trouble Code (DTC) when the Rear Sonar Sensor Left Outer is out of factory specifications.
OBDII Code B2720 Infiniti - Rear Sonar Sensor Left Outer - AutoCodes.com
B2720 Infiniti Code - Rear Sonar Sensor Left Outer

What are the Possible Causes of the DTC B2720 Infiniti?

  • Faulty Rear Sonar Sensor Left Outer
  • Rear Sonar Sensor Left Outer harness is open or shorted
  • Rear Sonar Sensor Left Outer circuit poor electrical connection
  • Faulty Sonar Control Unit

How to Fix the DTC B2720 Infiniti?

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 B2720 Infiniti 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 B2720 Infiniti code?

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Need Help with the 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 B2720 Infiniti Code

1. What are the common symptoms of OBDII code B2720 Infiniti Rear Sonar Sensor Left Outer?

The common symptoms include a malfunctioning or disabled rear sonar sensor on the left outer side of the vehicle, leading to issues with the parking assist system.

2. What could be the possible causes of OBDII code B2720 in an Infiniti related to the Rear Sonar Sensor Left Outer?

The code B2720 is usually triggered by a faulty rear sonar sensor on the left outer side, wiring issues, or a problem with the sensor's connection.

3. How can I diagnose the problem associated with OBDII code B2720 in an Infiniti Rear Sonar Sensor Left Outer?

You can diagnose the issue by visually inspecting the rear sonar sensor on the left outer side for any physical damage, checking the wiring for any signs of wear or corrosion, and using a diagnostic scan tool to identify the exact problem.

4. What are some repair tips for fixing OBDII code B2720 in an Infiniti Rear Sonar Sensor Left Outer?

Repair tips include replacing the faulty rear sonar sensor on the left outer side, repairing or replacing damaged wiring, and ensuring a secure and proper connection of the sensor.

5. Can I fix the OBDII code B2720 issue in an Infiniti Rear Sonar Sensor Left Outer myself?

If you have experience with automotive repairs and access to the necessary tools, you may be able to fix the issue yourself by following the repair tips provided. However, if you are unsure or uncomfortable with the repair process, it's best to seek professional help.

6. Will driving with OBDII code B2720 Infiniti Rear Sonar Sensor Left Outer affect the vehicle's performance?

Driving with this code may not significantly impact the vehicle's performance, but it can lead to the parking assist system not functioning correctly, potentially resulting in difficulty with parking or maneuvering in tight spaces.

7. How urgent is it to address OBDII code B2720 in an Infiniti Rear Sonar Sensor Left Outer?

While it may not be a critical issue for the vehicle's immediate functionality, addressing the problem promptly is recommended to ensure the proper operation of the parking assist system and overall safety while parking.

8. What are the potential risks of ignoring OBDII code B2720 related to the Rear Sonar Sensor Left Outer in an Infiniti?

Ignoring the code may lead to continued issues with the parking assist system, potentially resulting in difficulty judging distances while parking and increasing the risk of collisions or accidents.

9. Is it possible for the OBDII code B2720 in an Infiniti Rear Sonar Sensor Left Outer to reset on its own?

In some cases, the code may reset on its own if the underlying issue was temporary. However, if the problem persists, it is recommended to diagnose and address it to prevent further issues with the parking assist system.

10. How much does it typically cost to repair OBDII code B2720 in an Infiniti related to the Rear Sonar Sensor Left Outer?

The cost of repair can vary depending on the exact cause of the issue, the need for parts replacement, and labor charges. It is advisable to consult a mechanic or dealership for a more accurate estimate based on your specific situation.

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