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

Quick Answer

The B1C4C diagnostic trouble code (DTC) for Dodge vehicles specifically refers to the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low. Common causes include Faulty seat belt buckle tensioner, Damaged wiring or connectors in the seat belt tensioner circuit, Corrosion or debris affecting the electrical connections. 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 Dodge indicates 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low.
Common causes
Common causes include Faulty seat belt buckle tensioner, Damaged wiring or connectors in the seat belt tensioner circuit, Corrosion or debris affecting the electrical connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code B1C4C Dodge Description

The B1C4C diagnostic trouble code (DTC) for Dodge vehicles specifically refers to the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low. This code indicates that there is a malfunction in the circuit responsible for the tensioner in the seat belt buckle of the front passenger seat. The seat belt tensioner is a crucial safety component that is designed to tighten the seat belt in the event of a collision or sudden deceleration, ensuring that the occupant is securely restrained and protected.

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

Common Causes of B1C4C Dodge

  1. Faulty seat belt buckle tensioner.
  2. Damaged wiring or connectors in the seat belt tensioner circuit.
  3. Corrosion or debris affecting the electrical connections.
  4. Issues with the seat belt tensioner control module.
  5. Impact or physical damage to the seat belt buckle assembly.

Symptoms of B1C4C Dodge

  1. Illumination of the airbag warning light on the dashboard.
  2. Inability to properly fasten the seat belt in the front passenger seat.
  3. Audible warning chime indicating a seat belt issue.
  4. Failure of the seat belt tensioner to activate during a simulated crash test.

How to Fix B1C4C Dodge

  1. Begin by diagnosing the specific cause of the low circuit voltage in the seat belt buckle tensioner system using a diagnostic scanner.
  2. Inspect the wiring harness and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the seat belt buckle tensioner itself to ensure it is functioning correctly. Replace the buckle if it is found to be faulty.
  4. Clear the DTC from the vehicle's onboard computer using the diagnostic scanner.
  5. Perform a test drive to verify that the issue has been resolved and that the airbag warning light is no longer illuminated.

Cost to Fix B1C4C Dodge

The cost of repairing the 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the cost of parts for a seat belt buckle tensioner replacement can range from $100 to $300, while labor costs can add an additional $100 to $200. Overall, the total repair cost for this issue may fall within the range of $200 to $500. It is important to note that labor rates and part prices can vary significantly based on the location of the repair shop, the vehicle's make and model, and the technician's expertise. It is advisable to obtain quotes from multiple auto repair shops to ensure a competitive price for the repair.

When is the Code Detected?

This Diagnostic Trouble Code (DTC) sets when the Occupant Restraint Controller (ORC) detects a short to ground on the squib circuit for more than 2.5 seconds. This DTC transitions from active to stored when the module sees a recovery from a short to ground for greater than 2.5 seconds.

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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 Dodge Code

1. What does the OBDII code B1C4C mean on a Dodge vehicle?

The B1C4C code indicates a problem with the 1st row passenger seat belt buckle tensioner circuit, specifically that the circuit is reading a low voltage.

2. What are the common symptoms of a B1C4C code?

Symptoms include the airbag warning light being illuminated, potential seat belt tensioner malfunction, and possibly disabled airbag functionality for the passenger seat.

3. What causes the B1C4C code to appear?

Common causes include a damaged or corroded seat belt tensioner connector, a short or open in the wiring, or a faulty seat belt buckle tensioner.

4. Can I drive my vehicle with a B1C4C code?

While the vehicle may still be drivable, it’s not safe, as the passenger airbag system may not function properly in the event of an accident.

5. How do I diagnose the B1C4C code?

Diagnosis typically involves inspecting the seat belt tensioner connector and wiring for damage, testing the voltage in the circuit, and checking for continuity to identify any shorts or opens.

6. How do I fix the B1C4C code on a Dodge?

Repairs may include replacing the seat belt buckle tensioner, repairing damaged wiring, or cleaning and securing the connector to ensure proper electrical contact.

7. Can a discharged battery cause the B1C4C code?

Yes, a weak or discharged battery could potentially cause low voltage in the circuit, triggering the code.

8. Does the B1C4C code mean the airbag system is disabled?

Yes, this code may indicate that the passenger airbag system is compromised and may not deploy in a crash.

9. Is the B1C4C code covered under warranty?

It depends on your vehicle’s warranty. Seat belt systems are often covered under extended safety warranties, so check with your dealer.

10. How much does it cost to fix the B1C4C code?

Repair costs vary depending on the issue, but replacing a seat belt buckle tensioner typically costs $150–$300, plus labor. Wiring repairs may cost less if no major components need replacement.

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