AutoCodes – Generic – B1C4C

B1C4C Code - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low

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 Row Passenger Seat Belt Buckle Tensioner, 1st Row Passenger Seat Belt Buckle Tensioner harness is open or shorted, 1st Row Passenger 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: B1C4C indicates 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low.
Common causes: Common causes include Faulty 1st Row Passenger Seat Belt Buckle Tensioner, 1st Row Passenger Seat Belt Buckle Tensioner harness is open or shorted, 1st Row Passenger 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.

Save to My Repairs My Repairs

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

Code Popularity 888

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
Add Comment

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

Code B1C4C 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 B1C4C - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low - AutoCodes.com — B1C4C Code - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1C4C?

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

How to Fix the DTC B1C4C?

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 B1C4C 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 B1C4C code?

Need more information on how to fix the B1C4C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1C4C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1C4C Chrysler — 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low
B1C4C Dodge — 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low
B1C4C Jeep — 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low
B1C4C Mitsubishi — 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low
B1C4C RAM — 1st Row Passenger Seat Belt Buckle Tensioner 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 B1C4C Code

1. What are the common symptoms of OBDII code B1C4C (1st Row Passenger Seat Belt Buckle Tensioner Circuit Low)?

The common symptoms include the airbag warning light illuminating on the dashboard, possible chime sounds, and a potential message indicating a seat belt issue.

2. What can cause OBDII code B1C4C to trigger?

The code B1C4C is typically triggered by a malfunction in the 1st row passenger seat belt buckle tensioner circuit, often due to a faulty seat belt buckle or wiring issues.

3. How serious is OBDII code B1C4C (1st Row Passenger Seat Belt Buckle Tensioner Circuit Low)?

This code indicates a problem with the passenger seat belt tensioner circuit, which may affect the proper functioning of the seat belt buckle tensioner and airbag system. It is important to address this issue promptly for safety reasons.

4. Can I continue driving with OBDII code B1C4C active?

It is not recommended to continue driving with the code B1C4C active, as it indicates a potential safety issue with the passenger seat belt tensioner circuit. Have the problem diagnosed and repaired as soon as possible.

5. How can I diagnose the cause of OBDII code B1C4C?

Diagnosing the cause of B1C4C typically involves using a diagnostic scanner to retrieve the specific fault codes, inspecting the seat belt buckle and its wiring for any visible damage, and testing the circuit for continuity and proper operation.

6. What are the possible repair options for OBDII code B1C4C?

Repair options may include replacing the faulty passenger seat belt buckle, repairing or replacing damaged wiring, resetting the airbag system, and clearing the fault codes stored in the system.

7. Can I reset OBDII code B1C4C without fixing the underlying issue?

While you can clear the code temporarily, it is crucial to address the underlying problem causing the code to prevent it from reoccurring and ensure the proper functioning of the seat belt tensioner system.

8. How much does it typically cost to repair OBDII code B1C4C?

The cost of repairing B1C4C can vary depending on the cause of the issue, labor rates, and the cost of parts. It is advisable to consult with a professional mechanic to get an accurate estimate.

9. Is OBDII code B1C4C related to vehicle safety inspections?

OBDII code B1C4C, indicating a problem with the passenger seat belt tensioner circuit, may affect the safety systems of the vehicle. In some regions, issues related to airbags and seat belts can impact the vehicle's ability to pass safety inspections.

10. How can I prevent OBDII code B1C4C from occurring in the future?

To prevent OBDII code B1C4C from occurring, regularly inspect the seat belt buckle and its wiring for any signs of damage, address any issues promptly, and follow the manufacturer's recommended maintenance schedule for the vehicle's safety systems.