AutoCodes – Mitsubishi – B1B87 Mitsubishi

B1B87 Mitsubishi Code - Passenger Seat Weight Sensor 1 Right Rear Performance

Quick Answer

During the occupant classification module system verification test: if the module detects that the sensor input is less than 1.4 volts or greater than 3.6 volts. Common causes include Faulty Right Rear Passenger Seat Weight Sensor, Right Rear Passenger Seat Weight Sensor harness is open or shorted, Right Rear Passenger Seat Weight Sensor 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: B1B87 Mitsubishi indicates Passenger Seat Weight Sensor 1 Right Rear Performance.
Common causes: Common causes include Faulty Right Rear Passenger Seat Weight Sensor, Right Rear Passenger Seat Weight Sensor harness is open or shorted, Right Rear Passenger Seat Weight Sensor 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 821

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Aug 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1B87 Mitsubishi Description

During the occupant classification module system verification test: if the module detects that the sensor input is less than 1.4 volts or greater than 3.6 volts. During auto zero: if the module detects that the sensor input is less than 1 volt or greater than 4 volts.

OBDII Code B1B87 Mitsubishi - Passenger Seat Weight Sensor 1 Right Rear Performance - AutoCodes.com — B1B87 Mitsubishi Code - Passenger Seat Weight Sensor 1 Right Rear Performance

What does this mean?

What are the Possible Causes of the DTC B1B87 Mitsubishi?

Faulty Right Rear Passenger Seat Weight Sensor
Right Rear Passenger Seat Weight Sensor harness is open or shorted
Right Rear Passenger Seat Weight Sensor circuit poor electrical connection
Faulty Occupant Classification Module (OCM)

How to Fix the DTC B1B87 Mitsubishi?

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 B1B87 Mitsubishi 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 B1B87 Mitsubishi code?

Need more information on how to fix the B1B87 Mitsubishi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B87 Mitsubishi code diagnosed by a professional: Find a repair shop in your area

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 B1B87 Mitsubishi Code

1. What are the common symptoms of OBDII code B1B87 in a Mitsubishi related to the Passenger Seat Weight Sensor 1 Right Rear Performance?

The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the passenger seat airbag system.

2. What could cause the OBDII code B1B87 to trigger in a Mitsubishi?

The code B1B87 typically triggers when there is a malfunction or performance issue detected with the Passenger Seat Weight Sensor 1 Right Rear in the vehicle.

3. How can I diagnose the cause of OBDII code B1B87 in my Mitsubishi?

To diagnose the issue, you can use an OBDII scanner to retrieve the specific fault code, inspect the wiring and connections related to the passenger seat weight sensor, and perform a system reset to see if the code reoccurs.

4. Are there any safety concerns associated with OBDII code B1B87 in a Mitsubishi?

Yes, unresolved issues related to the Passenger Seat Weight Sensor 1 Right Rear can affect the proper functioning of the airbag system, potentially compromising passenger safety in the event of a collision.

5. Can I repair OBDII code B1B87 in my Mitsubishi by myself, or do I need professional help?

While some basic inspections and resets can be done by DIY enthusiasts, diagnosing and repairing the underlying cause of the code may require specialized knowledge and tools, so seeking professional help is recommended.

6. What are some common repair tips for addressing OBDII code B1B87 in a Mitsubishi?

Common repair tips include checking the wiring harness for any damage, ensuring all connections are secure, resetting the system after any repairs, and retesting to verify that the issue has been resolved.

7. Is it safe to drive my Mitsubishi with OBDII code B1B87 present?

It is not advisable to drive the vehicle with unresolved airbag system issues indicated by code B1B87, as it may compromise the effectiveness of the passenger seat airbag in the event of an accident.

8. How much does it typically cost to repair OBDII code B1B87 in a Mitsubishi?

The cost of repairing OBDII code B1B87 can vary depending on the underlying cause of the issue, the required parts, and labor costs. It is recommended to get a professional diagnosis to obtain an accurate estimate.

9. Can resetting the OBDII system clear the B1B87 code in a Mitsubishi?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the Passenger Seat Weight Sensor 1 Right Rear Performance is not addressed, the code is likely to reappear.

10. How long does it usually take to repair OBDII code B1B87 in a Mitsubishi?

The repair time for OBDII code B1B87 can vary based on the complexity of the issue and the availability of parts. Simple fixes may take a few hours, while more involved repairs could require a day or more.