AutoCodes – Jeep – B1C39 Jeep

B1C39 Jeep Code - 1st Row Driver Retractor Tensioner Circuit High

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 Driver Retractor Tensioner, 1st Row Driver Retractor Tensioner harness is open or shorted, 1st Row Driver 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: B1C39 Jeep indicates 1st Row Driver Retractor Tensioner Circuit High.
Common causes: Common causes include Faulty 1st Row Driver Retractor Tensioner, 1st Row Driver Retractor Tensioner harness is open or shorted, 1st Row Driver 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 583

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 B1C39 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 Jumpers and the 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 return wire to determine the state of the circuit.

OBDII Code B1C39 Jeep - 1st Row Driver Retractor Tensioner Circuit High - AutoCodes.com — B1C39 Jeep Code - 1st Row Driver Retractor Tensioner Circuit High

What does this mean?

What are the Possible Causes of the DTC B1C39 Jeep?

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

How to Fix the DTC B1C39 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 B1C39 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 B1C39 Jeep code?

Need more information on how to fix the B1C39 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1C39 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 B1C39 Jeep Code

1. What are the common symptoms of OBDII code B1C39 in a Jeep related to the 1st Row Driver Retractor Tensioner Circuit High?

- Common symptoms may include the airbag warning light staying illuminated on the dashboard and a potential non-deployment of the driver's seatbelt retractor tensioner during a collision.

2. What could cause the OBDII code B1C39 to trigger in a Jeep's 1st Row Driver Retractor Tensioner Circuit?

- Possible causes include a faulty driver seatbelt retractor tensioner, damaged wiring or connectors in the circuit, or a malfunction in the airbag control module.

3. How can I diagnose the issue related to code B1C39 in a Jeep's 1st Row Driver Retractor Tensioner Circuit?

- Diagnostic steps may involve using an OBDII scanner to retrieve the code, inspecting the wiring and connectors for any visible damage, and testing the driver seatbelt retractor tensioner for proper functionality.

4. Is it safe to drive a Jeep with the OBDII code B1C39 indicating a problem with the 1st Row Driver Retractor Tensioner Circuit?

- It is not recommended to drive the vehicle with this code active, as it may compromise the effectiveness of the driver's seatbelt retractor tensioner in the event of an accident.

5. What are some repair tips for addressing OBDII code B1C39 in a Jeep?

- Repair tips may include checking and repairing any damaged wiring or connectors in the circuit, replacing the faulty driver seatbelt retractor tensioner, and resetting the airbag control module after the repair.

6. Can a DIY enthusiast fix the issue related to code B1C39 in a Jeep, or is professional assistance necessary?

- While some basic troubleshooting and repairs can be done by DIY enthusiasts, dealing with airbag and seatbelt systems can be complex and dangerous. It is advisable to seek professional help for proper diagnosis and repair.

7. How much does it typically cost to repair OBDII code B1C39 in a Jeep's 1st Row Driver Retractor Tensioner Circuit?

- The cost of repair can vary depending on the specific issue causing the code, but it may involve expenses for parts replacement, labor costs, and potential diagnostic fees from a mechanic or dealership.

8. Are there any recalls or technical service bulletins related to OBDII code B1C39 in Jeep vehicles?

- It's advisable to check with Jeep dealerships or visit the manufacturer's website to see if there are any recalls or technical service bulletins addressing issues related to this specific OBDII code in Jeep models.

9. What are the potential risks of ignoring OBDII code B1C39 in a Jeep's 1st Row Driver Retractor Tensioner Circuit?

- Ignoring this code can lead to a compromised safety system, potentially resulting in the driver's seatbelt retractor tensioner not functioning correctly in an accident, which may increase the risk of injury.

10. Can resetting the OBDII code B1C39 in a Jeep temporarily resolve the issue with the 1st Row Driver Retractor Tensioner Circuit?

- Resetting the code may temporarily turn off the warning light, but it won't fix the underlying problem causing the code. It's essential to diagnose and repair the issue to ensure the safety systems are functioning correctly.