AutoCodes – Generic – B1B54

B1B54 Code - 1st Row Passenger Seat Belt Sensor Circuit Low

Quick Answer

When powered, the Occupant Restraint Controller (ORC) sends a test current across the Passenger Seat Belt Buckle Switch circuits every 100 ms to verify the integrity of the switch and wiring. Common causes include Faulty Passenger Seat Belt Buckle Switch, Passenger Seat Belt Buckle Switch harness is open or shorted, Passenger Seat Belt Buckle Switch 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: B1B54 indicates 1st Row Passenger Seat Belt Sensor Circuit Low.
Common causes: Common causes include Faulty Passenger Seat Belt Buckle Switch, Passenger Seat Belt Buckle Switch harness is open or shorted, Passenger Seat Belt Buckle Switch 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 4,274

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 21, 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 B1B54 Description

When powered, the Occupant Restraint Controller (ORC) sends a test current across the Passenger Seat Belt Buckle Switch circuits every 100 ms to verify the integrity of the switch and wiring. The front seat belt switches cannot be adjusted or repaired and, if ineffective or damaged, the entire front seat belt buckle-half unit must be replaced. The airbag warning lamp will display in the instrument cluster for this fault. While the ignition on and the Occupant Restraint Controller (ORC) is configured for a Passenger Seat Belt Switch, the ORC checks the switch input current ranges. The ORC monitors the switch input current ranges at power up and continuously every 100ms with the ignition in on.

OBDII Code B1B54 - 1st Row Passenger Seat Belt Sensor Circuit Low - AutoCodes.com — B1B54 Code - 1st Row Passenger Seat Belt Sensor Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1B54?

Faulty Passenger Seat Belt Buckle Switch
Passenger Seat Belt Buckle Switch harness is open or shorted
Passenger Seat Belt Buckle Switch circuit poor electrical connection
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B1B54?

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 B1B54 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 B1B54 code?

Need more information on how to fix the B1B54 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B54 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1B54 Chrysler — 1st Row Passenger Seat Belt Sensor Circuit Low
B1B54 Dodge — 1st Row Passenger Seat Belt Sensor Circuit Low
B1B54 Fiat — 1st Row Passenger Seat Belt Sensor Circuit Low
B1B54 Jeep — 1st Row Passenger Seat Belt Sensor Circuit Low
B1B54 Mitsubishi — 1st Row Passenger Seat Belt Sensor Circuit Low
B1B54 RAM — 1st Row Passenger Seat Belt Sensor Circuit Low

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 B1B54 Code

1. What are the common symptoms of OBDII code B1B54?

The common symptoms of OBDII code B1B54 include the airbag warning light illuminating on the dashboard and a diagnostic trouble code related to the 1st Row Passenger Seat Belt Sensor Circuit Low.

2. What can cause OBDII code B1B54 to trigger?

OBDII code B1B54, indicating a 1st Row Passenger Seat Belt Sensor Circuit Low, can be triggered by damaged wiring in the seat belt sensor circuit, a faulty seat belt sensor, or a poor connection in the system.

3. How serious is OBDII code B1B54?

OBDII code B1B54 is a serious issue as it indicates a problem with the passenger seat belt sensor circuit, which can affect the proper functioning of the airbag system in the event of a collision.

4. Can I continue driving with OBDII code B1B54 present?

It is not recommended to continue driving with OBDII code B1B54 present because it may compromise the effectiveness of the airbag system in the event of an accident.

5. How can I diagnose and repair OBDII code B1B54?

Diagnosing and repairing OBDII code B1B54 typically involves inspecting the wiring and connections in the 1st Row Passenger Seat Belt Sensor Circuit, testing the seat belt sensor for proper functionality, and repairing or replacing any faulty components as needed.

6. Can I reset OBDII code B1B54 myself?

You can attempt to reset OBDII code B1B54 using an OBDII scanner, but it is important to diagnose and repair the underlying issue causing the code to prevent it from reoccurring.

7. Are there any DIY tips for fixing OBDII code B1B54?

DIY tips for fixing OBDII code B1B54 include checking the wiring harness for damage, ensuring all connections are secure, and testing the seat belt sensor for proper operation before considering replacing any components.

8. How much does it cost to repair OBDII code B1B54?

The cost to repair OBDII code B1B54 can vary depending on the underlying cause of the issue, the labor rates of the repair facility, and the cost of any replacement parts needed.

9. Can OBDII code B1B54 be intermittent?

OBDII code B1B54 can be intermittent if the issue is related to a loose connection or intermittent fault in the seat belt sensor circuit. It is important to address the problem promptly to ensure the safety of the airbag system.

10. Is it safe to drive with the airbag warning light on due to OBDII code B1B54?

It is not safe to drive with the airbag warning light on due to OBDII code B1B54, as it indicates a potential issue with the passenger seat belt sensor circuit that could impact the proper deployment of the airbag in an accident.