Engine-CodesMitsubishi – B1B72 Mitsubishi

B1B72 Mitsubishi Code - Left Side Satellite Acceleration Sensor 1 Internal

Quick Answer

The B1B72 Mitsubishi code indicates a problem with the left side satellite acceleration sensor 1 internal. Common causes include Sensor malfunction due to wear and tear, Electrical issues such as a short circuit or wiring damage, Impact or damage to the sensor from a collision or rough road conditions. 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
B1B72 Mitsubishi indicates Left Side Satellite Acceleration Sensor 1 Internal.
Common causes
Common causes include Sensor malfunction due to wear and tear, Electrical issues such as a short circuit or wiring damage, Impact or damage to the sensor from a collision or rough road conditions.
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 Aug 18, 2024
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Code B1B72 Mitsubishi Description

The B1B72 Mitsubishi code indicates a problem with the left side satellite acceleration sensor 1 internal. This sensor is responsible for measuring the vehicle's lateral acceleration, which is crucial for systems like stability control and traction control to function properly. When this sensor is not working correctly, it can impact the vehicle's handling and safety systems. If left unaddressed, it could lead to issues like poor stability control, inaccurate traction control, and potentially compromised safety on the road.

OBDII Code B1B72 Mitsubishi - Left Side Satellite Acceleration Sensor 1 Internal
B1B72 Mitsubishi Code - Left Side Satellite Acceleration Sensor 1 Internal

Common Causes of B1B72 Mitsubishi

  1. Sensor malfunction due to wear and tear
  2. Electrical issues such as a short circuit or wiring damage
  3. Impact or damage to the sensor from a collision or rough road conditions
  4. Corrosion or moisture damage affecting the sensor's performance

Symptoms of B1B72 Mitsubishi

  1. Traction control or stability control warning lights illuminated on the dashboard
  2. Poor handling or stability while driving, especially during cornering
  3. Unexpected activation of stability control system
  4. Inaccurate readings on the dashboard display related to lateral acceleration

How to Fix B1B72 Mitsubishi

  1. Start by diagnosing the specific issue with the left side satellite acceleration sensor 1 internal using a diagnostic tool.
  2. Inspect the sensor and surrounding wiring for any visible damage, corrosion, or loose connections.
  3. If the sensor is faulty, replace it with a new OEM part to ensure proper functionality.
  4. Reset the vehicle's system and perform a calibration procedure to ensure the new sensor is properly calibrated.
  5. Test drive the vehicle to verify that the issue has been resolved and that the traction control and stability control systems are functioning correctly.

Cost to Fix B1B72 Mitsubishi

The cost of repairing the left side satellite acceleration sensor 1 internal can vary depending on the make and model of the vehicle, as well as the labor rates in your area. On average, the parts for this repair can range from $100 to $300, while the labor costs can range from $150 to $300. Overall, you can expect to pay anywhere from $250 to $600 for this repair at a reputable auto repair shop. It's always a good idea to get a few quotes from different shops to ensure you're getting a fair price.

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 this entire ignition cycle. The DTC will be latched on the next ignition cycle only if it sets all the items for the fault.

Need more information about the B1B72 Mitsubishi code?

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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 B1B72 Mitsubishi Code

1. What are the common symptoms of OBDII code B1B72 in a Mitsubishi related to the Left Side Satellite Acceleration Sensor 1 Internal?

The common symptoms may include the airbag warning light illuminating on the dashboard and potential issues with the vehicle's airbag system.

2. What are the possible causes of the B1B72 OBDII code in a Mitsubishi?

The B1B72 code typically indicates a fault with the Left Side Satellite Acceleration Sensor 1 internal circuit, which could be caused by wiring issues, sensor malfunction, or a problem with the airbag control module.

3. How serious is the B1B72 OBDII code related to the Left Side Satellite Acceleration Sensor 1 Internal in a Mitsubishi?

This code is related to the airbag system, so it is considered a serious issue that should be addressed promptly to ensure the proper functioning of the vehicle's safety features.

4. Can I continue driving my Mitsubishi with the B1B72 OBDII code present?

It is not recommended to drive the vehicle with the B1B72 code active, as it indicates a potential problem with the airbag system, which is a critical safety component.

5. How can I diagnose and repair the B1B72 OBDII code in my Mitsubishi?

Diagnosing and repairing the B1B72 code typically requires the use of a professional OBDII scanner to pinpoint the exact cause of the issue. Repairs may involve checking and repairing wiring connections, replacing the acceleration sensor, or addressing issues with the airbag control module.

6. Is it safe to reset the OBDII code B1B72 in a Mitsubishi without fixing the underlying issue?

Resetting the code without addressing the root cause can temporarily turn off the warning light, but the issue with the airbag system will persist, potentially compromising safety in the event of an accident.

7. How much does it cost to fix the B1B72 OBDII code related to the Left Side Satellite Acceleration Sensor 1 Internal in a Mitsubishi?

The cost of repairing the B1B72 code can vary depending on the specific cause of the issue and the labor rates in your area. It is recommended to consult a professional mechanic for an accurate estimate.

8. Can a DIY enthusiast fix the B1B72 OBDII code issue in a Mitsubishi?

While some experienced DIY enthusiasts may be able to diagnose and repair simple wiring issues related to the B1B72 code, it is generally recommended to seek professional help for airbag system problems due to their critical safety nature.

9. Will the B1B72 OBDII code cause my Mitsubishi to fail a state inspection?

The B1B72 code is related to the airbag system, which is a critical safety component. Most state inspections require all safety systems, including airbags, to be in proper working order, so the presence of this code may lead to inspection failure.

10. How can I prevent the recurrence of the B1B72 OBDII code in my Mitsubishi?

Regular maintenance checks, avoiding rough driving conditions, and addressing any warning lights promptly can help prevent the recurrence of the B1B72 code related to the Left Side Satellite Acceleration Sensor 1 Internal in your Mitsubishi.

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