AutoCodes – Buick – B390A Buick

B390A Buick Code - Short Range Object Sensor Performance

Quick Answer

The Radar Sensor Module short range performs internal fault detection on itself. Common causes include Faulty Radar Sensor Module, Radar Sensor Module harness is open or shorted, Radar Sensor Module 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: B390A Buick indicates Short Range Object Sensor Performance.
Common causes: Common causes include Faulty Radar Sensor Module, Radar Sensor Module harness is open or shorted, Radar Sensor Module 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.

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Code Popularity 503

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 Mar 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B390A Buick Description

The Radar Sensor Module short range performs internal fault detection on itself. The Diagnostic Trouble Code (DTC) sets when the Radar Sensor Module short range continually runs the program to detect faults.

OBDII Code B390A Buick - Short Range Object Sensor Performance - AutoCodes.com — B390A Buick Code - Short Range Object Sensor Performance

What does this mean?

What are the Possible Causes of the DTC B390A Buick?

Faulty Radar Sensor Module
Radar Sensor Module harness is open or shorted
Radar Sensor Module circuit poor electrical connection

How to Fix the DTC B390A Buick?

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 B390A Buick 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.

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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 B390A Buick Code

1. What are common symptoms of OBDII code B390A Buick (Short Range Object Sensor Performance)?

- Common symptoms include malfunctioning parking assist system, false alerts, and disabled sensors.

2. What are the possible causes of OBDII code B390A Buick (Short Range Object Sensor Performance)?

- The code may be triggered by faulty short-range object sensors, wiring issues, or a malfunctioning control module.

3. How can I diagnose OBDII code B390A Buick (Short Range Object Sensor Performance)?

- Diagnosis typically involves using a diagnostic scanner to retrieve the code and checking the short-range object sensors and related wiring for any issues.

4. What are some repair tips for fixing OBDII code B390A Buick (Short Range Object Sensor Performance)?

- Repair tips may include checking and cleaning the sensors, inspecting and repairing any damaged wiring, and resetting the system after repairs.

5. Can I drive my Buick with OBDII code B390A (Short Range Object Sensor Performance)?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the parking assist system.

6. How much does it typically cost to repair OBDII code B390A Buick (Short Range Object Sensor Performance)?

- Repair costs can vary depending on the specific issue causing the code, but they may range from $100 to $300 for sensor replacement or wiring repairs.

7. Will OBDII code B390A Buick (Short Range Object Sensor Performance) affect my vehicle's performance?

- This code is more related to the parking assist system and may not directly impact the vehicle's overall performance, but it can affect the convenience and safety features.

8. Can I reset OBDII code B390A Buick (Short Range Object Sensor Performance) without repairs?

- Resetting the code without addressing the underlying issue may temporarily clear the code, but it is recommended to diagnose and repair the problem to prevent it from recurring.

9. Are there any recalls or technical service bulletins related to OBDII code B390A Buick?

- It is advisable to check with Buick dealerships or online resources for any recalls or technical service bulletins specific to OBDII code B390A affecting Buick vehicles.

10. How can I prevent OBDII code B390A Buick (Short Range Object Sensor Performance) from occurring in the future?

- Regularly inspecting and maintaining the parking assist system components, such as sensors and wiring, can help prevent issues that trigger this code.