AutoCodes – Generic – B1BBA

B1BBA Code - Passenger Seat Weight Sensor Supply Circuit

Quick Answer

While the CAN bus ignition status is in IGN-RUN, the module checks the sensor supply. Common causes include Faulty Occupant Classification Module (OCM), Occupant Classification Module (OCM) harness is open or shorted, Occupant Classification Module (OCM) 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: B1BBA indicates Passenger Seat Weight Sensor Supply Circuit.
Common causes: Common causes include Faulty Occupant Classification Module (OCM), Occupant Classification Module (OCM) harness is open or shorted, Occupant Classification Module (OCM) 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 1,054

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 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1BBA Description

While the CAN bus ignition status is in IGN-RUN, the module checks the sensor supply. If the Occupant Classification Module (OCM) detects that the sensor supply shorted, this code will be set.

OBDII Code B1BBA - Passenger Seat Weight Sensor Supply Circuit - AutoCodes.com — B1BBA Code - Passenger Seat Weight Sensor Supply Circuit

What does this mean?

What are the Possible Causes of the DTC B1BBA?

Faulty Occupant Classification Module (OCM)
Occupant Classification Module (OCM) harness is open or shorted
Occupant Classification Module (OCM) circuit poor electrical connection

How to Fix the DTC B1BBA?

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 B1BBA 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 B1BBA code?

Need more information on how to fix the B1BBA code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1BBA code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1BBA Chrysler — Passenger Seat Weight Sensor Supply Circuit
B1BBA Dodge — Passenger Seat Weight Sensor Supply Circuit
B1BBA Jeep — Passenger Seat Weight Sensor Supply Circuit
B1BBA Mitsubishi — Passenger Seat Weight Sensor Supply Circuit
B1BBA RAM — Passenger Seat Weight Sensor Supply Circuit

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 B1BBA Code

1. What are the common symptoms of OBDII code B1BBA related to the Passenger Seat Weight Sensor Supply Circuit?

The common symptoms include the airbag warning light illuminated on the dashboard, the passenger airbag being disabled, and potential issues with the seatbelt warning system.

2. What causes the OBDII code B1BBA related to the Passenger Seat Weight Sensor Supply Circuit?

The code B1BBA is typically caused by a faulty passenger seat weight sensor, damaged wiring in the seat sensor circuit, or a malfunction in the airbag control module.

3. How can I diagnose the OBDII code B1BBA for the Passenger Seat Weight Sensor Supply Circuit?

Diagnosis involves using an OBDII scanner to retrieve the specific fault code, conducting a visual inspection of the seat sensor wiring, and testing the sensor itself for proper functionality.

4. Is it safe to drive with OBDII code B1BBA related to the Passenger Seat Weight Sensor Supply Circuit?

It is not recommended to drive with this code present, as it may indicate a potential issue with the passenger airbag system, compromising safety in the event of a collision.

5. Can I reset the OBDII code B1BBA for the Passenger Seat Weight Sensor Supply Circuit myself?

While you can clear the code with an OBDII scanner, it is crucial to address the underlying cause of the issue to prevent the code from reoccurring and ensure the proper functioning of the passenger airbag system.

6. How much does it typically cost to repair OBDII code B1BBA related to the Passenger Seat Weight Sensor Supply Circuit?

The cost of repair can vary depending on the root cause of the issue, but it may involve replacing the passenger seat weight sensor, repairing damaged wiring, or reprogramming the airbag control module. Costs can range from $200 to $800 or more.

7. Are there any DIY tips for fixing OBDII code B1BBA for the Passenger Seat Weight Sensor Supply Circuit?

DIY tips may include checking and securing the seat sensor wiring connections, ensuring the sensor is properly calibrated, and inspecting for any visible damage or corrosion in the sensor circuit.

8. How long does it typically take to repair OBDII code B1BBA related to the Passenger Seat Weight Sensor Supply Circuit?

The repair time can vary based on the complexity of the issue and the specific components that need to be addressed, but it may take anywhere from 1 to 4 hours at a repair shop.

9. What are the potential risks of ignoring OBDII code B1BBA for the Passenger Seat Weight Sensor Supply Circuit?

Ignoring the code can lead to the passenger airbag not deploying in an accident, potentially causing serious injury or even fatalities to the passenger in the event of a collision.

10. Is it necessary to visit a dealership for OBDII code B1BBA related to the Passenger Seat Weight Sensor Supply Circuit, or can any mechanic handle the repair?

While any qualified mechanic should be able to diagnose and repair the issue, visiting a dealership or a specialist with experience in airbag systems may ensure a more accurate diagnosis and proper repair of the problem.