AutoCodes – Chrysler – B1BBA Chrysler

B1BBA Chrysler 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 Chrysler 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 687

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

What does this mean?

What are the Possible Causes of the DTC B1BBA Chrysler?

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 Chrysler?

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 Chrysler 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 Chrysler code?

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

Need Help with the Code?

Get the B1BBA Chrysler 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 B1BBA Chrysler Code

1. What does the OBDII code B1BBA mean on a Chrysler?

The B1BBA code indicates an issue with the passenger seat weight sensor supply circuit, which is part of the airbag system to detect passenger presence and weight.

2. What are the symptoms of a B1BBA code?

Common symptoms include the airbag warning light illuminated on the dashboard and possible deactivation of the passenger airbag.

3. What causes the B1BBA code to appear?

Causes can include a faulty seat weight sensor, damaged wiring or connectors in the circuit, or a malfunctioning occupant classification module.

4. Can I drive my Chrysler with a B1BBA code?

While the vehicle may still be drivable, the airbag system may not function correctly in an accident, posing a safety risk.

5. How do you diagnose the B1BBA code?

Diagnosis involves using a scan tool to confirm the code, inspecting the wiring and connectors under the passenger seat, and testing the weight sensor and module for faults.

6. How is the B1BBA code fixed?

Repairs typically include replacing a damaged weight sensor, repairing or replacing faulty wiring, or replacing the occupant classification module if necessary.

7. How much does it cost to fix the B1BBA code?

Repair costs vary but can range from $100 for simple wiring repairs to over $500 if the weight sensor or module needs replacement.

8. Can a loose connection cause the B1BBA code?

Yes, a loose or corroded connector in the passenger seat weight sensor circuit is a common cause of this code.

9. Will clearing the B1BBA code fix the problem?

Clearing the code without addressing the underlying issue will only temporarily turn off the warning light; the code will return if the problem persists.

10. Is the B1BBA code covered under warranty?

Depending on your Chrysler's warranty and age, repairs related to the airbag system may be covered. Check with your dealership for details.