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Engine-Codes – Generic – B2055

B2055 Code - Radar Sensor Malfunction

Quick Answer

The B2055 diagnostic trouble code (DTC) indicates a radar sensor malfunction in the vehicle's safety system. Common causes include Electrical issues such as wiring damage or poor connections, Sensor calibration errors, Physical damage to the sensor from debris or impact. 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
B2055 indicates Radar Sensor Malfunction.
Common causes
Common causes include Electrical issues such as wiring damage or poor connections, Sensor calibration errors, Physical damage to the sensor from debris or impact.
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 B2055 Description

The B2055 diagnostic trouble code (DTC) indicates a radar sensor malfunction in the vehicle's safety system. Radar sensors are a crucial part of modern vehicles' advanced driver assistance systems (ADAS), specifically in features like adaptive cruise control, collision avoidance, and blind-spot monitoring. When the radar sensor malfunctions, it can significantly impact the vehicle's safety features, potentially compromising the accuracy of these systems and increasing the risk of accidents.

OBDII Code B2055 - Radar Sensor Malfunction
B2055 Code - Radar Sensor Malfunction

Common Causes of B2055

  1. Electrical issues such as wiring damage or poor connections
  2. Sensor calibration errors
  3. Physical damage to the sensor from debris or impact
  4. Corrosion or water intrusion into the sensor
  5. Software glitches or updates needed for the sensor system

Symptoms of B2055

  1. Warning light on the instrument cluster related to the safety system
  2. Inaccurate or erratic behavior of adaptive cruise control
  3. False alarms from collision avoidance system
  4. Loss of blind-spot monitoring functionality

How to Fix B2055

  1. Diagnose the specific issue with the radar sensor using a scan tool that can read the DTC and provide live data.
  2. Inspect the wiring harness and connections to ensure there are no breaks, shorts, or corrosion.
  3. Check for physical damage to the sensor and replace if necessary.
  4. Perform calibration or software updates as recommended by the manufacturer.
  5. Test the system to ensure proper functionality and reset the DTC if necessary.

Cost to Fix B2055

The cost of repairing a radar sensor malfunction can vary depending on the specific issue and the vehicle's make and model. In general, replacing a radar sensor can range from $200 to $1000, including parts and labor. However, additional costs may apply if calibration or software updates are needed. It's essential to consult with a qualified mechanic or dealership to get an accurate estimate based on your vehicle's needs. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to inquire about these costs upfront.

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Code B2055 Information for Specific Makes

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B2055 Code

1. What are common symptoms of OBDII code B2055 (Radar Sensor Malfunction)?

- Common symptoms include the malfunction indicator light (MIL) illuminating on the dashboard, loss of radar sensor functionality, and potential issues with advanced driver assistance systems (ADAS).

2. What are the possible causes of OBDII code B2055?

- The code B2055 can be triggered by issues such as a faulty radar sensor, damaged wiring or connectors, software glitches, or environmental factors affecting sensor performance.

3. How can I diagnose a radar sensor malfunction related to OBDII code B2055?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific trouble code, checking the radar sensor's wiring and connections for damage, and performing radar sensor calibration if necessary.

4. Can I still drive my vehicle with OBDII code B2055 present?

- It is not recommended to drive your vehicle with a radar sensor malfunction as it may impact the proper functioning of safety systems like adaptive cruise control and collision warning.

5. How can I repair a radar sensor malfunction causing OBDII code B2055?

- Repairing this issue often involves replacing the faulty radar sensor, repairing damaged wiring or connectors, updating software as needed, and recalibrating the radar sensor system.

6. Are there any DIY tips for addressing OBDII code B2055 at home?

- DIY tips may include checking the radar sensor's physical condition, ensuring all connections are secure, and consulting the vehicle's service manual for specific troubleshooting steps.

7. Will resetting the OBDII code B2055 clear the issue permanently?

- Simply resetting the code may temporarily clear the MIL, but it will not fix the underlying radar sensor malfunction causing the code. Proper diagnosis and repair are necessary to address the issue permanently.

8. Can extreme weather conditions cause OBDII code B2055 to trigger?

- Yes, extreme weather conditions such as heavy rain, snow, or fog can sometimes affect the radar sensor's performance and trigger the B2055 code. Checking for environmental factors is important during diagnosis.

9. How much does it typically cost to repair a radar sensor malfunction related to OBDII code B2055?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from a few hundred to a couple of thousand dollars, especially if a new radar sensor is needed.

10. Is it necessary to visit a dealership or can any auto repair shop handle the repair for OBDII code B2055?

- While some general auto repair shops may be equipped to diagnose and repair radar sensor malfunctions, visiting a dealership or a shop specializing in advanced vehicle systems may be preferable for accurate diagnosis and proper repair.

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