B1B79 Code - Passenger Seat Weight Sensor 3 Left Front Input Circuit Low
Quick Answer
The B1B79 diagnostic trouble code (DTC) refers to the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low. Common causes include Faulty passenger seat weight sensor, Wiring or connection issues in the input circuit, Corrosion or damage to the sensor or circuit. 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 indicates Passenger Seat Weight Sensor 3 Left Front Input Circuit Low.
- Common causes
- Common causes include Faulty passenger seat weight sensor, Wiring or connection issues in the input circuit, Corrosion or damage to the sensor or circuit.
- 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 B1B79 Description
The B1B79 diagnostic trouble code (DTC) refers to the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low. This code indicates that there is a problem with the passenger seat weight sensor, specifically the input circuit on the left front side of the vehicle. The weight sensor is an essential component of the vehicle's Occupant Classification System (OCS), which determines whether the airbag should deploy in the event of a crash based on the weight of the passenger in the seat.
Common Causes of B1B79
- Faulty passenger seat weight sensor.
- Wiring or connection issues in the input circuit.
- Corrosion or damage to the sensor or circuit.
- Software or calibration issues with the OCS system.
- Impact or damage to the passenger seat affecting sensor readings.
Symptoms of B1B79
- Airbag warning light illuminated on the dashboard.
- Inconsistent or incorrect airbag deployment in a crash.
- Passenger airbag off indicator when a passenger is present.
- Failure of the vehicle to pass state inspection due to airbag system malfunction.
How to Fix B1B79
- Begin by diagnosing the specific cause of the issue using a diagnostic scan tool to read the fault codes and identify the problem area.
- Inspect the wiring and connections related to the passenger seat weight sensor to ensure there are no loose connections or damage.
- Test the sensor itself to determine if it is functioning correctly or needs to be replaced.
- If the sensor is faulty, replace it with a new OEM or aftermarket sensor and recalibrate the OCS system as needed.
- Clear the fault codes from the vehicle's computer system and perform a test drive to ensure the issue has been resolved.
Cost to Fix B1B79
The typical repair costs for addressing a Passenger Seat Weight Sensor 3 Left Front Input Circuit Low code can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair for this type of problem can range from $200 to $500, including the cost of a new sensor and any necessary labor. However, it is essential to check with local auto repair shops for more accurate pricing, as rates can vary based on location, vehicle make and model, and other factors. Keep in mind that diagnostic time and labor rates can also impact the overall cost of the repair.
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Code B1B79 Information for Specific Makes
- B1B79 Chrysler — Passenger Seat Weight Sensor 3 Left Front Input Circuit Low
- B1B79 Dodge — Passenger Seat Weight Sensor 3 Left Front Input Circuit Low
- B1B79 Jeep — Passenger Seat Weight Sensor 3 Left Front Input Circuit Low
- B1B79 Mitsubishi — Passenger Seat Weight Sensor 3 Left Front Input Circuit Low
- B1B79 RAM — Passenger Seat Weight Sensor 3 Left Front Input Circuit Low
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.
Frequently Asked Questions about B1B79 Code
1. What are the common symptoms of OBDII code B1B79 related to the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low?
- Common symptoms include the airbag warning light illuminating on the dashboard, potential deactivation of the passenger airbag, and diagnostic trouble code B1B79 being stored.
2. What are the possible causes of OBDII code B1B79 indicating an issue with the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low?
- Possible causes can include a faulty weight sensor in the passenger seat, damaged wiring or connectors in the circuit, or a malfunctioning airbag control module.
3. How can I diagnose the issue related to OBDII code B1B79 on the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low?
- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble code, checking the wiring and connectors for damage, and testing the weight sensor in the passenger seat for proper operation.
4. Is it safe to drive with OBDII code B1B79 triggered by an issue with the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low?
- It is recommended to address the underlying issue promptly to ensure the proper functioning of the passenger airbag system. Until the problem is resolved, the passenger airbag may be deactivated, so caution is advised.
5. Can I reset OBDII code B1B79 related to the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low on my own?
- While you can clear the trouble code temporarily with a diagnostic scanner, it is essential to diagnose and repair the root cause of the issue to prevent the code from reoccurring.
6. What are some repair tips for fixing OBDII code B1B79 associated with the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low?
- Repair tips may include checking and repairing any damaged wiring or connectors, recalibrating or replacing the weight sensor in the passenger seat, or resetting the airbag control module.
7. Will replacing the passenger seat resolve OBDII code B1B79 linked to the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low?
- While a faulty weight sensor in the passenger seat can be a common cause, it is recommended to diagnose the issue thoroughly before replacing any components to ensure an accurate and cost-effective repair.
8. How much does it typically cost to repair OBDII code B1B79 concerning the Passenger Seat Weight Sensor 3 Left Front Input Circuit Low?
- Repair costs can vary depending on the underlying cause of the issue. It is advisable to consult a professional mechanic for a proper diagnosis and an accurate estimate of repair costs.
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