AutoCodes – Generic – B1B7A

B1B7A Code - Passenger Seat Weight Sensor 3 Left Front Input Circuit High

Quick Answer

If the module detects that the sensor input is greater than 96 +/- 0.6% of the Seat Weight Sensor 5 Volt circuit voltage. Common causes include Faulty Left Front Passenger Seat Weight Sensor, Left Front Passenger Seat Weight Sensor harness is open or shorted, Left Front 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: B1B7A indicates Passenger Seat Weight Sensor 3 Left Front Input Circuit High.
Common causes: Common causes include Faulty Left Front Passenger Seat Weight Sensor, Left Front Passenger Seat Weight Sensor harness is open or shorted, Left Front 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 978

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 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1B7A Description

If the module detects that the sensor input is greater than 96 +/- 0.6% of the Seat Weight Sensor 5 Volt circuit voltage. Note that this Diagnostic Trouble Code (DTC) will remain active after the condition that set this fault is no longer present. Performing the Occupant Classification Module (OCM) System Verification Test will change the status from active to stored if the condition that set the fault is no longer present.

OBDII Code B1B7A - Passenger Seat Weight Sensor 3 Left Front Input Circuit High - AutoCodes.com — B1B7A Code - Passenger Seat Weight Sensor 3 Left Front Input Circuit High

What does this mean?

What are the Possible Causes of the DTC B1B7A?

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

How to Fix the DTC B1B7A?

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 B1B7A 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 B1B7A code?

Need more information on how to fix the B1B7A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B7A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1B7A Chrysler — Passenger Seat Weight Sensor 3 Left Front Input Circuit High
B1B7A Dodge — Passenger Seat Weight Sensor 3 Left Front Input Circuit High
B1B7A Jeep — Passenger Seat Weight Sensor 3 Left Front Input Circuit High
B1B7A Mitsubishi — Passenger Seat Weight Sensor 3 Left Front Input Circuit High
B1B7A RAM — Passenger Seat Weight Sensor 3 Left Front Input Circuit High

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 B1B7A Code

1. What are common symptoms of OBDII code B1B7A related to the Passenger Seat Weight Sensor 3 Left Front Input Circuit High?

- Common symptoms include the airbag warning light staying on, malfunctioning of the passenger airbag system, and potential disabling of the passenger airbag.

2. What are the possible causes of OBDII code B1B7A indicating an issue with the Passenger Seat Weight Sensor 3 Left Front Input Circuit High?

- Possible causes include a faulty weight sensor in the passenger seat, damaged wiring or connectors in the circuit, or a malfunctioning airbag control module.

3. How can I diagnose the issue related to OBDII code B1B7A for the Passenger Seat Weight Sensor 3 Left Front Input Circuit High?

- Diagnosis involves using an OBDII scanner to retrieve the specific fault code, inspecting the passenger seat weight sensor and its connections, and testing the circuit for continuity and proper voltage.

4. What are the safety implications of ignoring OBDII code B1B7A linked to the Passenger Seat Weight Sensor 3 Left Front Input Circuit High?

- Ignoring this code can lead to the passenger airbag not deploying in the event of a crash, potentially increasing the risk of injury to the passenger in the front seat.

5. Can I continue driving my vehicle with OBDII code B1B7A present for the Passenger Seat Weight Sensor 3 Left Front Input Circuit High?

- It is not recommended to drive the vehicle with this code present, as it indicates a potential issue with the passenger airbag system, which is crucial for passenger safety in the event of a collision.

6. How can I repair OBDII code B1B7A associated with the Passenger Seat Weight Sensor 3 Left Front Input Circuit High?

- Repair may involve replacing the faulty weight sensor in the passenger seat, repairing damaged wiring or connectors, or resetting the airbag control module to clear the fault code.

7. Is it possible to reset OBDII code B1B7A concerning the Passenger Seat Weight Sensor 3 Left Front Input Circuit High without addressing the underlying issue?

- While you can clear the fault code using an OBDII scanner, it is crucial to address the root cause of the problem to ensure the proper functioning of the passenger airbag system.

8. How much does it typically cost to repair OBDII code B1B7A related to the Passenger Seat Weight Sensor 3 Left Front Input Circuit High?

- The cost of repair can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Are there any recalls or technical service bulletins related to OBDII code B1B7A concerning the Passenger Seat Weight Sensor 3 Left Front Input Circuit High?

- Check with your vehicle manufacturer or a dealership to see if there are any recalls or technical service bulletins related to this specific OBDII code for your vehicle make and model.

10. Can a DIY enthusiast with automotive knowledge fix OBDII code B1B7A associated with the Passenger Seat Weight Sensor 3 Left Front Input Circuit High?

- Depending on the specific issue, some DIY enthusiasts with the necessary tools and expertise may be able to address this problem, but it is recommended to consult a professional for proper diagnosis and repair to ensure safety and effectiveness.