AutoCodes – Generic – B1B73

B1B73 Code - Left Side Satellite Acceleration Sensor 2 Internal

Quick Answer

The Left Side Impact Sensor 2 is located in the C-pillar area just past the 2nd row doors. Common causes include Faulty Left Side Impact Sensor 2, Left Side Impact Sensor 2 harness is open or shorted, Left Side Impact Sensor 2 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: B1B73 indicates Left Side Satellite Acceleration Sensor 2 Internal.
Common causes: Common causes include Faulty Left Side Impact Sensor 2, Left Side Impact Sensor 2 harness is open or shorted, Left Side Impact Sensor 2 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 1,010

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 Aug 21, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1B73 Description

The Left Side Impact Sensor 2 is located in the C-pillar area just past the 2nd row doors. The impact sensors perform their own self-test using power supplied by the Occupant Restraint Controller (ORC) then communicates this status back to the ORC with periodic updates. The impact sensor performs a self test for internal circuitry at power up during the initialization process, and continuously through the ignition cycle every 10 ms.

OBDII Code B1B73 - Left Side Satellite Acceleration Sensor 2 Internal - AutoCodes.com — B1B73 Code - Left Side Satellite Acceleration Sensor 2 Internal

What does this mean?

What are the Possible Causes of the DTC B1B73?

Faulty Left Side Impact Sensor 2
Left Side Impact Sensor 2 harness is open or shorted
Left Side Impact Sensor 2 circuit poor electrical connection
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B1B73?

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 B1B73 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 B1B73 code?

Need more information on how to fix the B1B73 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B73 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1B73 Chrysler — Left Side Satellite Acceleration Sensor 2 Internal
B1B73 Dodge — Left Side Satellite Acceleration Sensor 2 Internal
B1B73 Jeep — Left Side Satellite Acceleration Sensor 2 Internal
B1B73 Mitsubishi — Left Side Satellite Acceleration Sensor 2 Internal
B1B73 RAM — Left Side Satellite Acceleration Sensor 2 Internal

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.