AutoCodesJeep – B1C4C Jeep

B1C4C Jeep 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 Jeep 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.
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Code Popularity 1,339
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 26, 2019
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Code B1C4C Jeep 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 Jeep - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low - AutoCodes.com
B1C4C Jeep Code - 1st Row Passenger Seat Belt Buckle Tensioner Circuit Low

What are the Possible Causes of the DTC B1C4C Jeep?

  • 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 Jeep?

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 Jeep 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 Jeep code?

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

Need Help with the Code?

Get the B1C4C Jeep 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 B1C4C Jeep Code

What does the OBDII code B1C4C mean in a Jeep?

The code B1C4C indicates a problem with the 1st row passenger seat belt buckle tensioner circuit, specifically that the circuit is low, which may affect the seat belt's ability to properly restrain a passenger in the event of a collision.

What are the common symptoms of a B1C4C code?

Common symptoms include the illumination of the airbag warning light, malfunction alerts related to the seat belt system, and potentially the seat belt not retracting or latching properly.

What could cause the B1C4C code to appear?

Potential causes include a faulty seat belt buckle tensioner, damaged wiring or connectors in the seat belt system, or issues with the airbag control module.

Can I drive my Jeep with the B1C4C code?

While you can technically drive with this code, it is not recommended as it indicates a problem with the seat belt system that could compromise passenger safety in an accident.

How can I diagnose the B1C4C code?

To diagnose the code, check for any faulty components in the seat belt buckle assembly, inspect wiring and connectors for damage, and use a multimeter to test the resistance in the tensioner circuit.

What repairs are typically needed for a B1C4C code?

Repairs may involve replacing the seat belt buckle tensioner, repairing or replacing damaged wiring or connectors, or resetting the airbag control module after repairs.

Is it necessary to clear the B1C4C code after repairs?

Yes, after making the necessary repairs, you should clear the code using an OBDII scanner to reset the system and confirm that the issue has been resolved.

Can the B1C4C code affect airbag deployment?

Yes, if there is a fault in the seat belt buckle tensioner circuit, it can affect the airbag system's performance, potentially impacting airbag deployment in the event of a crash.

How much does it typically cost to fix the B1C4C code?

The cost to fix the B1C4C code can vary widely depending on the specific issue, but it may range from $100 to $500, depending on whether you need to replace parts or make wiring repairs.

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