AutoCodes – Generic – B1C4A

B1C4A Code - 1st Row Passenger Retractor 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 Row Passenger Retractor Tensioner, 1st Row Passenger Retractor Tensioner harness is open or shorted, 1st Row Passenger Retractor 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: B1C4A indicates 1st Row Passenger Retractor Tensioner Circuit Shorted Together.
Common causes: Common causes include Faulty 1st Row Passenger Retractor Tensioner, 1st Row Passenger Retractor Tensioner harness is open or shorted, 1st Row Passenger Retractor 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 1,417

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 B1C4A 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 B1C4A - 1st Row Passenger Retractor Tensioner Circuit Shorted Together - AutoCodes.com — B1C4A Code - 1st Row Passenger Retractor Tensioner Circuit Shorted Together

What does this mean?

What are the Possible Causes of the DTC B1C4A?

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

How to Fix the DTC B1C4A?

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 B1C4A 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 B1C4A code?

Need more information on how to fix the B1C4A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1C4A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1C4A Chrysler — 1st Row Passenger Retractor Tensioner Circuit Shorted Together
B1C4A Dodge — 1st Row Passenger Retractor Tensioner Circuit Shorted Together
B1C4A Jeep — 1st Row Passenger Retractor Tensioner Circuit Shorted Together
B1C4A Mitsubishi — 1st Row Passenger Retractor Tensioner Circuit Shorted Together
B1C4A RAM — 1st Row Passenger Retractor Tensioner 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 B1C4A Code

1. What are the common symptoms of OBDII code B1C4A 1st Row Passenger Retractor Tensioner Circuit Shorted Together?

The common symptoms include the airbag warning light illuminating on the dashboard, non-deployment of the passenger side airbag in the event of a collision, and potential loss of restraint system functionality.

2. What can cause OBDII code B1C4A to trigger?

This code is typically triggered by a short circuit in the wiring harness of the 1st row passenger retractor tensioner system, usually due to damaged wiring, loose connections, or a faulty tensioner mechanism.

3. How serious is OBDII code B1C4A 1st Row Passenger Retractor Tensioner Circuit Shorted Together?

This code is considered serious as it affects the proper functioning of the passenger side airbag and seatbelt tensioner system, potentially compromising occupant safety in the event of a collision.

4. How can I diagnose the issue causing OBDII code B1C4A?

Diagnosing this code usually involves inspecting the wiring harness and connectors associated with the 1st row passenger retractor tensioner system, performing continuity tests, and using a scan tool to view live data and trouble codes.

5. Can I continue driving with OBDII code B1C4A present?

It is not recommended to continue driving with this code present, as it indicates a fault in the passenger restraint system that may result in the airbag not deploying properly in the event of an accident.

6. How can I repair OBDII code B1C4A 1st Row Passenger Retractor Tensioner Circuit Shorted Together?

Repairing this code typically involves locating and repairing the short circuit in the wiring harness, replacing damaged wiring or connectors, and resetting the fault codes using a diagnostic scan tool.

7. Is it safe to reset the OBDII code B1C4A without fixing the underlying issue?

Resetting the code without addressing the underlying issue is not recommended, as the fault is likely to reoccur, potentially putting the passenger at risk in the event of a collision.

8. Can a DIY enthusiast fix OBDII code B1C4A at home?

While some aspects of diagnosing and repairing this code can be done by a DIY enthusiast with the right tools and knowledge, dealing with airbag and restraint system components may require professional expertise due to safety concerns.

9. How much does it cost to repair OBDII code B1C4A?

The cost of repairing this code can vary depending on the extent of the wiring damage, the need for replacement parts, and labor costs. It is advisable to consult a professional mechanic for an accurate estimate.

10. How often does OBDII code B1C4A occur in vehicles?

OBDII code B1C4A related to the 1st Row Passenger Retractor Tensioner Circuit Shorted Together is relatively uncommon but can occur in vehicles with faulty wiring or damaged components in the restraint system.