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Engine-Codes – Generic – B1B73

B1B73 Code - Left Side Satellite Acceleration Sensor 2 Internal

Quick Answer

The B1B73 diagnostic trouble code (DTC) refers to the Left Side Satellite Acceleration Sensor 2 Internal. Common causes include Faulty left side satellite acceleration sensor 2, Wiring issues or shorts in the sensor circuit, Corrosion or damage to sensor connections. 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
B1B73 indicates Left Side Satellite Acceleration Sensor 2 Internal.
Common causes
Common causes include Faulty left side satellite acceleration sensor 2, Wiring issues or shorts in the sensor circuit, Corrosion or damage to sensor connections.
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 15, 2024
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Code B1B73 Description

The B1B73 diagnostic trouble code (DTC) refers to the Left Side Satellite Acceleration Sensor 2 Internal. This code indicates that there is an internal fault detected in the left side satellite acceleration sensor 2 within the vehicle's system. The satellite acceleration sensor is a crucial component of the vehicle's safety system, as it helps to monitor the vehicle's acceleration and deceleration forces. When this sensor malfunctions, it can lead to inaccurate data being sent to the vehicle's control modules, potentially affecting the vehicle's stability control, traction control, and airbag deployment systems.

OBDII Code B1B73 - Left Side Satellite Acceleration Sensor 2 Internal
B1B73 Code - Left Side Satellite Acceleration Sensor 2 Internal

Common Causes of B1B73

  1. Faulty left side satellite acceleration sensor 2
  2. Wiring issues or shorts in the sensor circuit
  3. Corrosion or damage to sensor connections
  4. Software or programming issues within the vehicle's control modules

Symptoms of B1B73

  1. Illuminated warning light on the dashboard
  2. Stability control or traction control system malfunctions
  3. Inaccurate airbag deployment
  4. Poor handling or stability while driving

How to Fix B1B73

  1. Begin by diagnosing the specific cause of the B1B73 code using a diagnostic scanner to pinpoint the issue.
  2. Inspect the left side satellite acceleration sensor 2 for any visible damage or signs of malfunction.
  3. Check the wiring and connections associated with the sensor for any corrosion, damage, or loose connections.
  4. If the sensor is faulty, replace it with a new, OEM-quality sensor.
  5. Clear the DTC and perform a test drive to ensure that the issue has been resolved and that the warning light does not reappear.

Cost to Fix B1B73

The typical repair costs for addressing the B1B73 code can vary depending on the specific cause of the issue and the vehicle's make and model. In general, replacing a satellite acceleration sensor can cost between $150 and $300 for the part alone. Labor costs can range from $100 to $200, with total repair costs potentially amounting to $250 to $500. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle type, and labor rates at the auto repair shop. It is recommended to obtain quotes from local shops for a more accurate cost estimate.

When is the Code Detected?

This Diagnostic Trouble Code (DTC) sets when the Occupant Restraint Controller (ORC) receives notification of a self test failure within the impact sensor. Once set, this DTC is latched for the entire ignition cycle or until the clear faults scan tool command is used, depending on the specific condition that sets the DTC.

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Code B1B73 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 B1B73 Code

1. What are common symptoms of OBDII code B1B73 (Left Side Satellite Acceleration Sensor 2 Internal)?

The common symptoms of this code may include the malfunction indicator light (MIL) illuminating on the dashboard, issues with the vehicle stability control system, and potential problems with the airbag system.

2. What can cause OBDII code B1B73 to trigger?

This code is typically triggered by a fault in the left side satellite acceleration sensor 2 internal circuit. Common causes may include wiring issues, sensor malfunction, or a problem with the airbag control module.

3. How serious is OBDII code B1B73 (Left Side Satellite Acceleration Sensor 2 Internal)?

This code is related to the proper functioning of the vehicle's safety systems, particularly the airbag system. It is recommended to address this issue promptly to ensure the safety features of the vehicle are working correctly.

4. Can I continue driving with OBDII code B1B73 present?

It is not advisable to continue driving with this code present, as it may indicate a potential issue with the airbag system or other safety features. It is recommended to have the vehicle inspected and repaired as soon as possible.

5. How can OBDII code B1B73 be diagnosed?

Diagnosing this code typically involves using a scan tool to retrieve the fault codes from the vehicle's computer system. Additionally, a thorough inspection of the left side satellite acceleration sensor 2 and related wiring may be necessary to pinpoint the exact cause of the issue.

6. Is it possible to repair OBDII code B1B73 (Left Side Satellite Acceleration Sensor 2 Internal) on my own?

Repairing this code may require advanced diagnostic tools and knowledge of airbag systems. It is recommended to consult a professional mechanic or dealership for proper diagnosis and repair to ensure the safety systems are functioning correctly.

7. How much does it cost to repair OBDII code B1B73?

The cost of repairing this code can vary depending on the underlying cause of the issue. It may involve replacing the left side satellite acceleration sensor, repairing wiring issues, or addressing a fault in the airbag control module. Costs can range from a few hundred to over a thousand dollars.

8. Can resetting the fault code make OBDII code B1B73 go away permanently?

Resetting the fault code may temporarily clear the MIL light, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is important to diagnose and repair the root cause of the problem to prevent the code from coming back.

9. Is OBDII code B1B73 specific to a certain vehicle make or model?

OBDII code B1B73 related to the Left Side Satellite Acceleration Sensor 2 Internal can be found in various vehicle makes and models equipped with airbag systems that utilize this sensor. It is not specific to a single manufacturer.

10. Are there any safety concerns associated with OBDII code B1B73?

Given that this code is related to the airbag system and vehicle stability control, there may be safety concerns if the issue is not addressed promptly. It is crucial to have the vehicle inspected and repaired to ensure the safety features are functioning properly.

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