B1B84 Code - Passenger Seat Weight Sensor 2 Left Rear Input Circuit High
Quick Answer
If the module detects that the sensor input is greater than 96 +/- 0.6% of the Seat Weight Sensor 5 Volt circuit voltage. Common causes include Faulty Left Rear Passenger Seat Weight Sensor, Left Rear Passenger Seat Weight Sensor harness is open or shorted, Left Rear 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
- B1B84 indicates Passenger Seat Weight Sensor 2 Left Rear Input Circuit High.
- Common causes
- Common causes include Faulty Left Rear Passenger Seat Weight Sensor, Left Rear Passenger Seat Weight Sensor harness is open or shorted, Left Rear 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.
Code B1B84 Description
What are the Possible Causes of the DTC B1B84?
- Faulty Left Rear Passenger Seat Weight Sensor
- Left Rear Passenger Seat Weight Sensor harness is open or shorted
- Left Rear Passenger Seat Weight Sensor circuit poor electrical connection
- Faulty Occupant Classification Module (OCM)
How to Fix the DTC B1B84?
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 B1B84 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.
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Information for Specific Makes
- B1B84 Chrysler — Passenger Seat Weight Sensor 2 Left Rear Input Circuit High
- B1B84 Dodge — Passenger Seat Weight Sensor 2 Left Rear Input Circuit High
- B1B84 Jeep — Passenger Seat Weight Sensor 2 Left Rear Input Circuit High
- B1B84 Mitsubishi — Passenger Seat Weight Sensor 2 Left Rear Input Circuit High
- B1B84 RAM — Passenger Seat Weight Sensor 2 Left Rear Input Circuit High
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 B1B84 Code
What does the OBDII code B1B84 mean?
The code B1B84 indicates an issue with the "Passenger Seat Weight Sensor 2 Left Rear Input Circuit High," meaning the electrical circuit for this sensor is experiencing abnormally high voltage.
What are the common symptoms of code B1B84?
Symptoms may include the passenger airbag not functioning properly, an illuminated airbag warning light, or incorrect passenger weight detection.
What causes the B1B84 code to appear?
Common causes include a faulty weight sensor, damaged wiring or connectors, a short circuit, or an issue with the airbag control module.
Can I drive my car with the B1B84 code?
It's not recommended, as this code may indicate an issue with the airbag system, which could compromise passenger safety in the event of a collision.
How is the B1B84 code diagnosed?
Technicians typically use a scan tool to retrieve the code, inspect the wiring and connectors for damage, and test the weight sensor and related circuits for proper function.
How do you fix the B1B84 code?
Repairs may involve replacing the faulty weight sensor, repairing damaged wiring or connectors, or reprogramming or replacing the airbag control module.
Can clearing the code fix the problem?
Clearing the code may temporarily turn off the warning light, but the underlying issue must be resolved to prevent the code from returning.
Is the B1B84 code specific to certain vehicle makes or models?
While the B1B84 code is a standardized OBDII code, its occurrence and specific diagnostics may vary depending on the vehicle's make, model, and year.
How much does it cost to repair the B1B84 code?
Repair costs can vary widely, typically ranging from $100 to $500, depending on whether the issue is with the sensor, wiring, or control module.
What can I do to prevent the B1B84 code from occurring?
Regular maintenance, avoiding spills or heavy impacts on the passenger seat, and promptly addressing airbag system warnings can help prevent this issue.
Discuss the causes and fixes for B1B84 OBDII Code
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