AutoCodes – Dodge – B1C40 Dodge

B1C40 Dodge Code - 1st Driver Seat Belt Buckle Tensioner Circuit Shorted Together

Quick Answer

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. Common causes include Faulty 1st Driver Seat Belt Buckle Tensioner, 1st Driver Seat Belt Buckle Tensioner harness is open or shorted, 1st Driver Seat Belt Buckle Tensioner 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: B1C40 Dodge indicates 1st Driver Seat Belt Buckle Tensioner Circuit Shorted Together.
Common causes: Common causes include Faulty 1st Driver Seat Belt Buckle Tensioner, 1st Driver Seat Belt Buckle Tensioner harness is open or shorted, 1st Driver Seat Belt Buckle Tensioner 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 715

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 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1C40 Dodge Description

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. These circuits are maintained in a floating configuration at the module (connected to neither power nor ground) as protection against inadvertent deployment. The use of the Supplemental Restraints System (SRS) Load Tool Adapter provides a test point as well as a method for opening the shorting bar connections within the harness connector. The ORC sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up and every 500 ms thereafter while the ignition is in on. The module then monitors the data return wire to determine the state of the circuit.

OBDII Code B1C40 Dodge - 1st Driver Seat Belt Buckle Tensioner Circuit Shorted Together - AutoCodes.com — B1C40 Dodge Code - 1st Driver Seat Belt Buckle Tensioner Circuit Shorted Together

What does this mean?

What are the Possible Causes of the DTC B1C40 Dodge?

Faulty 1st Driver Seat Belt Buckle Tensioner
1st Driver Seat Belt Buckle Tensioner harness is open or shorted
1st Driver Seat Belt Buckle Tensioner circuit poor electrical connection
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B1C40 Dodge?

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 B1C40 Dodge 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 B1C40 Dodge code?

Need more information on how to fix the B1C40 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1C40 Dodge 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 B1C40 Dodge Code

1. What are the common symptoms of OBDII code B1C40 in a Dodge related to the 1st driver seat belt buckle tensioner circuit being shorted together?

- The airbag warning light may illuminate on the dashboard, indicating a fault in the driver seat belt buckle tensioner circuit.

2. What can cause the 1st driver seat belt buckle tensioner circuit to short together in a Dodge, triggering code B1C40?

- Possible causes include damaged wiring, a faulty seat belt buckle tensioner, or a malfunctioning airbag control module.

3. How can I diagnose the 1st driver seat belt buckle tensioner circuit shorted together issue in my Dodge when OBDII code B1C40 is present?

- It is recommended to perform a visual inspection of the wiring harness, connectors, and seat belt buckle tensioner for any visible damage or loose connections.

4. Is it safe to drive my Dodge with OBDII code B1C40 indicating a shorted 1st driver seat belt buckle tensioner circuit?

- It is not recommended to drive the vehicle with this issue as the driver's seat belt tensioner may not function properly in the event of a collision.

5. Can I reset the OBDII code B1C40 related to the driver seat belt buckle tensioner circuit shorted together without fixing the underlying issue?

- Clearing the code without addressing the root cause will likely result in the code reappearing once the system detects the fault again.

6. How can I repair the 1st driver seat belt buckle tensioner circuit shorted together problem in my Dodge?

- Repair may involve repairing or replacing damaged wiring, fixing faulty components like the seat belt buckle tensioner, or reprogramming the airbag control module.

7. Are there any safety precautions to consider when working on the 1st driver seat belt buckle tensioner circuit in a Dodge?

- It is important to disconnect the vehicle's battery before performing any repairs to avoid accidental airbag deployment.

8. Can a DIY enthusiast fix the OBDII code B1C40 issue related to the driver seat belt buckle tensioner circuit shorted together?

- While some basic troubleshooting steps can be taken, repairing the seat belt tensioner circuit may require specialized tools and expertise best handled by a professional technician.

9. How much does it typically cost to repair the 1st driver seat belt buckle tensioner circuit shorted together in a Dodge?

- The cost of repair can vary depending on the extent of the damage, the need for new parts, and labor rates, but it may range from a few hundred to over a thousand dollars.

10. Will fixing the 1st driver seat belt buckle tensioner circuit issue clear the OBDII code B1C40 from my Dodge's computer system?

- Once the underlying problem is resolved, the code can be cleared using an OBDII scanner, but it may take a few driving cycles for the system to verify the repair and turn off the warning light.