AutoCodes – Generic – B1BBB

B1BBB Code - Passenger Seat Weight Sensor Input Shorted Together

Quick Answer

While the CAN bus ignition status is in IGN-RUN. 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: B1BBB indicates Passenger Seat Weight Sensor Input Shorted Together.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 813

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1BBB Description

While the CAN bus ignition status is in IGN-RUN. This code will set if the Occupant Classification Module (OCM) detects any two sensors voltages below 20mV for 10 minutes while any other sensor is greater than 40mV. Note: 1 a/d count is equal to 5mV.

OBDII Code B1BBB - Passenger Seat Weight Sensor Input Shorted Together - AutoCodes.com — B1BBB Code - Passenger Seat Weight Sensor Input Shorted Together

What does this mean?

What are the Possible Causes of the DTC B1BBB?

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 B1BBB?

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 B1BBB 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 B1BBB code?

Need more information on how to fix the B1BBB code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1BBB code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1BBB Chrysler — Passenger Seat Weight Sensor Input Shorted Together
B1BBB Dodge — Passenger Seat Weight Sensor Input Shorted Together
B1BBB Jeep — Passenger Seat Weight Sensor Input Shorted Together
B1BBB Mitsubishi — Passenger Seat Weight Sensor Input Shorted Together
B1BBB RAM — Passenger Seat Weight Sensor Input Shorted Together

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 B1BBB Code

1. What are the common symptoms of OBDII code B1BBB (Passenger Seat Weight Sensor Input Shorted Together)?

- Common symptoms include the airbag warning light staying on, the passenger airbag being disabled, and potential issues with the seatbelt reminder system.

2. What are the possible causes of OBDII code B1BBB?

- The code B1BBB is typically caused by a short circuit in the passenger seat weight sensor system, often due to damaged wiring or a faulty sensor.

3. How can I diagnose OBDII code B1BBB?

- Diagnosing code B1BBB involves using a scan tool to read the fault code, inspecting the wiring and connectors in the passenger seat weight sensor system, and testing the sensor itself for proper function.

4. Can I continue to drive my vehicle with OBDII code B1BBB present?

- It is not recommended to drive the vehicle with code B1BBB present, as the passenger airbag may not deploy in the event of a collision, potentially increasing the risk of injury.

5. How can I repair OBDII code B1BBB?

- Repairing code B1BBB involves identifying and fixing the short circuit in the passenger seat weight sensor system, which may require repairing or replacing damaged wiring, connectors, or the sensor itself.

6. Is it possible to reset OBDII code B1BBB without fixing the underlying issue?

- Resetting the code without fixing the underlying issue will only temporarily clear the fault code, and the issue will likely return until the root cause is addressed.

7. Can a DIY enthusiast fix OBDII code B1BBB at home?

- While some DIY enthusiasts may have the skills to diagnose and repair code B1BBB at home, it is recommended to consult a professional technician for proper diagnosis and repair to ensure safety and accuracy.

8. How much does it cost to repair OBDII code B1BBB at a mechanic?

- The cost of repairing code B1BBB can vary depending on the extent of the damage and the specific components that need to be repaired or replaced. It is advisable to get a detailed estimate from a mechanic.

9. Are there any recalls related to OBDII code B1BBB in certain vehicle models?

- Some vehicle manufacturers have issued recalls related to the passenger seat weight sensor system, which may cause code B1BBB. It is recommended to check with the manufacturer or a dealership for any related recalls.

10. How often should the passenger seat weight sensor system be inspected to prevent OBDII code B1BBB?

- Regular inspection and maintenance of the passenger seat weight sensor system, especially in vehicles with a history of sensor issues, is recommended to prevent code B1BBB and ensure proper airbag function.