AutoCodes – Jeep – B1B79 Jeep

B1B79 Jeep Code - Passenger Seat Weight Sensor 3 Left Front Input Circuit Low

Quick Answer

If the module detects that the sensor input is less than 3.4 +/- 0.6% of the Seat Weight Sensor 5 Volt circuit voltage. Common causes include Faulty Left Front Passenger Seat Weight Sensor, Left Front Passenger Seat Weight Sensor harness is open or shorted, Left Front Passenger Seat Weight Sensor 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: B1B79 Jeep indicates Passenger Seat Weight Sensor 3 Left Front Input Circuit Low.
Common causes: Common causes include Faulty Left Front Passenger Seat Weight Sensor, Left Front Passenger Seat Weight Sensor harness is open or shorted, Left Front Passenger Seat Weight Sensor 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 1,545

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 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1B79 Jeep Description

If the module detects that the sensor input is less than 3.4 +/- 0.6% of the Seat Weight Sensor 5 Volt circuit voltage. This Diagnostic Trouble Code (DTC) will also set if the Seat Weight Sensor 5 Volt circuit is shorted to ground. However, this condition would prevent communication with the Occupant Classification Module (OCM) and cause a Lost Communication With OCM DTC to set in other modules. Also, this DTC will remain active after the condition that set this fault is no longer present. This condition is referred to as latching the DTC for the ignition cycle. Cycling the ignition key will change the status from active to stored if the condition that set the fault is no longer present.

OBDII Code B1B79 Jeep - Passenger Seat Weight Sensor 3 Left Front Input Circuit Low - AutoCodes.com — B1B79 Jeep Code - Passenger Seat Weight Sensor 3 Left Front Input Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1B79 Jeep?

Faulty Left Front Passenger Seat Weight Sensor
Left Front Passenger Seat Weight Sensor harness is open or shorted
Left Front Passenger Seat Weight Sensor circuit poor electrical connection
Faulty Occupant Classification Module (OCM)

How to Fix the DTC B1B79 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 B1B79 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 B1B79 Jeep code?

Need more information on how to fix the B1B79 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B79 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 B1B79 Jeep Code

1. What are the common symptoms of OBDII code B1B79 in a Jeep related to the passenger seat weight sensor?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the passenger airbag system.

2. What does the OBDII code B1B79 Jeep indicate about the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low?

- This code indicates a problem with the left front input circuit of the passenger seat weight sensor, suggesting a potential issue with the sensor's ability to detect weight accurately.

3. What are some possible causes of the B1B79 Jeep code related to the passenger seat weight sensor?

- Possible causes include a faulty passenger seat weight sensor, damaged wiring or connectors, a defective airbag control module, or issues with the sensor calibration.

4. How can I diagnose the OBDII code B1B79 in my Jeep related to the passenger seat weight sensor?

- Diagnosing this code may involve using a professional OBDII scanner to read the fault codes, checking the wiring and connectors for damage, and testing the passenger seat weight sensor for proper functionality.

5. Is it safe to drive my Jeep with the B1B79 code related to the passenger seat weight sensor?

- It is not recommended to drive the vehicle with this code present, as it may affect the proper functioning of the passenger airbag system in the event of a collision.

6. Can I repair the OBDII code B1B79 related to the passenger seat weight sensor myself?

- While some basic troubleshooting steps can be taken, it is recommended to have this issue diagnosed and repaired by a qualified mechanic or dealership to ensure proper functioning of the airbag system.

7. How much does it typically cost to repair the B1B79 Jeep code related to the passenger seat weight sensor?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing the passenger seat weight sensor, repairing damaged wiring, or recalibrating the sensor, which can range from a few hundred to over a thousand dollars.

8. Can resetting the OBDII code B1B79 related to the passenger seat weight sensor fix the issue?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem with the passenger seat weight sensor. It is essential to diagnose and repair the issue to ensure the proper functioning of the airbag system.

9. Are there any recalls or technical service bulletins related to the B1B79 Jeep code and the passenger seat weight sensor?

- It's advisable to check with a Jeep dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins specific to the B1B79 code and the passenger seat weight sensor in your vehicle.

10. What steps can I take to prevent the recurrence of the B1B79 code related to the passenger seat weight sensor in my Jeep?

- To prevent the code from reoccurring, it's essential to ensure the passenger seat weight sensor is functioning correctly, avoid placing heavy objects on the passenger seat, and regularly inspect the wiring and connectors for any signs of damage.