Engine-CodesInfiniti – B2708 Infiniti

B2708 Infiniti Code - Rear Sonar Sensor Left Inner

Quick Answer

The B2708 Infiniti code indicates a fault with the rear sonar sensor located on the left inner side of the vehicle. Common causes include Faulty rear sonar sensor, Damaged wiring or connectors, Corrosion or debris affecting sensor performance. 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
B2708 Infiniti indicates Rear Sonar Sensor Left Inner.
Common causes
Common causes include Faulty rear sonar sensor, Damaged wiring or connectors, Corrosion or debris affecting sensor performance.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B2708 Infiniti Description

The B2708 Infiniti code indicates a fault with the rear sonar sensor located on the left inner side of the vehicle. This sensor is responsible for detecting objects or obstacles behind the vehicle when reversing, providing an audible warning to the driver to prevent collisions. When this sensor malfunctions, it can lead to a loss of this important safety feature, potentially increasing the risk of accidents while reversing.

OBDII Code B2708 Infiniti - Rear Sonar Sensor Left Inner
B2708 Infiniti Code - Rear Sonar Sensor Left Inner

Common Causes of B2708 Infiniti

  1. Faulty rear sonar sensor
  2. Damaged wiring or connectors
  3. Corrosion or debris affecting sensor performance
  4. Issues with the control module
  5. Electrical problems within the system

Symptoms of B2708 Infiniti

  1. Loss of audible warning when reversing
  2. Inaccurate or inconsistent distance readings on the parking assist display
  3. Warning light illuminated on the dashboard
  4. Difficulty detecting obstacles behind the vehicle
  5. Complete failure of the parking assist system

How to Fix B2708 Infiniti

  1. Begin by diagnosing the specific cause of the B2708 code using a diagnostic scanner to pinpoint the exact issue.
  2. Inspect the rear sonar sensor, wiring, and connectors for any visible damage or corrosion. Replace any damaged components.
  3. Test the sensor's functionality by manually triggering the parking assist system and checking for accurate readings.
  4. If the sensor itself is faulty, replace it with a new OEM or aftermarket unit to restore proper operation.
  5. Clear the diagnostic trouble codes from the vehicle's system and test the parking assist system to ensure the issue has been resolved.

Cost to Fix B2708 Infiniti

The cost of repairing a rear sonar sensor left inner issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's recommended to obtain quotes from multiple sources to ensure a fair price.

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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 B2708 Infiniti Code

1. What are the common symptoms of OBDII code B2708 in an Infiniti related to the Rear Sonar Sensor Left Inner?

- Common symptoms include malfunctioning or non-functional rear parking assist system, with the left inner sensor specifically failing to provide accurate distance measurements.

2. What can cause the OBDII code B2708 in an Infiniti related to the Rear Sonar Sensor Left Inner?

- The code B2708 can be triggered by a faulty rear sonar sensor, wiring issues, or sensor calibration problems.

3. How can I diagnose the OBDII code B2708 in my Infiniti for the Rear Sonar Sensor Left Inner?

- Diagnose by visually inspecting the sensor for physical damage and checking the wiring connections. Using a diagnostic tool to read the code and perform sensor tests can help pinpoint the issue.

4. Can I repair the OBDII code B2708 related to the Rear Sonar Sensor Left Inner in my Infiniti myself?

- Depending on the root cause, repairs can range from simple sensor replacement to more complex wiring repairs. If you're comfortable with automotive DIY tasks, you may be able to address the issue yourself.

5. Is it safe to drive my Infiniti with the OBDII code B2708 related to the Rear Sonar Sensor Left Inner illuminated?

- While the vehicle is generally safe to drive with this code, you may lose the functionality of the rear parking assist system until the issue is resolved, so exercise caution when parking.

6. How much does it typically cost to repair the OBDII code B2708 in an Infiniti for the Rear Sonar Sensor Left Inner?

- The cost can vary depending on the cause of the issue. Sensor replacement can range from $100 to $300, while addressing wiring problems or sensor calibration may incur additional labor costs.

7. Can extreme weather conditions affect the performance of the Rear Sonar Sensor Left Inner in an Infiniti?

- Yes, extreme temperatures or inclement weather can impact the sensor's performance, leading to false readings or sensor failure triggering the B2708 code.

8. Will disconnecting the battery reset the OBDII code B2708 related to the Rear Sonar Sensor Left Inner in my Infiniti?

- Disconnecting the battery may temporarily clear the code, but it won't fix the underlying issue. It's recommended to diagnose and address the root cause to prevent the code from reappearing.

9. Are there any preventive maintenance tips to avoid encountering the OBDII code B2708 in an Infiniti for the Rear Sonar Sensor Left Inner?

- Regularly inspecting the sensors for damage, ensuring proper wiring connections, and cleaning the sensors can help prevent issues that trigger the B2708 code.

10. Can a dealership or a certified mechanic help me diagnose and repair the OBDII code B2708 in my Infiniti for the Rear Sonar Sensor Left Inner?

- Yes, a dealership or a certified mechanic with experience in diagnosing and repairing Infiniti's rear sonar systems can efficiently identify and address the issue triggering the B2708 code.

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