AutoCodes – Generic – B1B57

B1B57 Code - 1st Row Passenger Seat Belt Sensor Circuit Shorted Together

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: B1B57 indicates 1st Row Passenger Seat Belt Sensor Circuit Shorted Together.
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.

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Code Popularity 2,189

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
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Code B1B57 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. The ORC monitors the status of the seat belt switch circuits at power up and every 100ms thereafter while the ignition is in on.

OBDII Code B1B57 - 1st Row Passenger Seat Belt Sensor Circuit Shorted Together - AutoCodes.com — B1B57 Code - 1st Row Passenger Seat Belt Sensor Circuit Shorted Together

What does this mean?

What are the Possible Causes of the DTC B1B57?

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 B1B57?

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 B1B57 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 B1B57 code?

Need more information on how to fix the B1B57 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B57 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1B57 Chrysler — 1st Row Passenger Seat Belt Sensor Circuit Shorted Together
B1B57 Dodge — 1st Row Passenger Seat Belt Sensor Circuit Shorted Together
B1B57 Fiat — 1st Row Passenger Seat Belt Sensor Circuit Shorted Together
B1B57 Jeep — 1st Row Passenger Seat Belt Sensor Circuit Shorted Together
B1B57 Mitsubishi — 1st Row Passenger Seat Belt Sensor Circuit Shorted Together
B1B57 RAM — 1st Row Passenger Seat Belt Sensor Circuit 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 B1B57 Code

1. What are the common symptoms of OBDII code B1B57 indicating the 1st Row Passenger Seat Belt Sensor Circuit Shorted Together?

The common symptoms include the airbag warning light illuminating on the dashboard, the passenger airbag system being disabled, and a warning message displayed on the instrument cluster.

2. What could cause the OBDII code B1B57 to trigger for the 1st Row Passenger Seat Belt Sensor Circuit Shorted Together?

The code B1B57 can be triggered by a short circuit in the wiring of the passenger seat belt sensor or a fault in the sensor itself.

3. How serious is the OBDII code B1B57 related to the 1st Row Passenger Seat Belt Sensor Circuit Shorted Together?

This code is considered serious as it indicates a potential safety issue with the passenger airbag system, which may not deploy in a crash if the sensor circuit is shorted together.

4. Can I continue driving my vehicle with the OBDII code B1B57 present?

It is not recommended to drive the vehicle with this code active, as the passenger airbag system may not function properly in the event of a collision, putting the occupant at risk.

5. How can I diagnose and repair the OBDII code B1B57 for the 1st Row Passenger Seat Belt Sensor Circuit Shorted Together?

Diagnosing and repairing this code typically involves inspecting the wiring harness and sensor for any visible damage, testing the sensor's resistance, and repairing or replacing any faulty components.

6. Is it safe to reset the OBDII code B1B57 without addressing the underlying issue?

Resetting the code without fixing the root cause may temporarily turn off the warning light, but the safety concern with the passenger airbag system will remain unresolved.

7. Can a DIY enthusiast fix the OBDII code B1B57 at home?

While diagnosing this code may require specialized tools and knowledge, some DIY enthusiasts with experience in automotive electrical systems may be able to address the issue by following repair guides or seeking help from professionals.

8. How much does it typically cost to repair the OBDII code B1B57 related to the 1st Row Passenger Seat Belt Sensor Circuit Shorted Together?

The cost of repairing this code can vary depending on the extent of the damage and whether any components need to be replaced. It is recommended to obtain quotes from auto repair shops for an accurate estimate.

9. Are there any preventive measures to avoid triggering the OBDII code B1B57 in the future?

Regularly inspecting the seat belt sensor wiring for damage, avoiding spills and debris near the sensor, and ensuring proper seat belt use by passengers can help prevent the occurrence of this code.