B1B84 Chrysler 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 Chrysler 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 Chrysler Description
What are the Possible Causes of the DTC B1B84 Chrysler?
- 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 Chrysler?
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 Chrysler 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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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 Chrysler Code
1. What does OBDII code B1B84 mean on a Chrysler vehicle?
Code B1B84 indicates an issue with the Passenger Seat Weight Sensor 2 Left Rear Input Circuit being detected as high, which may affect the airbag system's functionality.
2. What are the common symptoms of the B1B84 code?
Symptoms include the airbag warning light illuminating, potential deactivation of the passenger airbag, and possible error messages related to the occupant classification system.
3. What causes the B1B84 code to be triggered?
Common causes include a faulty seat weight sensor, damaged wiring or connectors in the circuit, or issues with the Occupant Classification Module (OCM).
4. Can I drive my Chrysler with the B1B84 code active?
While the vehicle may still be drivable, the passenger airbag might not deploy in a collision, posing a safety risk. It's recommended to address the issue promptly.
5. How do I diagnose the B1B84 code?
Begin by scanning the vehicle with an OBDII scanner to confirm the code. Then, inspect the wiring and connectors for damage, test the weight sensor, and check the OCM for faults.
6. How do I fix the B1B84 code?
Repairs may include replacing the faulty weight sensor, repairing or replacing damaged wiring, or recalibrating or replacing the Occupant Classification Module.
7. How much does it cost to fix the B1B84 code on a Chrysler?
The repair cost varies depending on the issue. Replacing a weight sensor may cost $200–$400, while more extensive repairs like module replacement can exceed $500.
8. Can a loose connection cause the B1B84 code?
Yes, a loose or corroded connector in the seat sensor wiring can cause the circuit to read as high and trigger the code.
9. Do I need to recalibrate the system after fixing the B1B84 code?
In most cases, recalibrating the Occupant Classification System is necessary after repairs to ensure proper airbag functionality.
10. Can I clear the B1B84 code without fixing the problem?
Clearing the code without addressing the root cause will likely result in the code returning, and the airbag system may remain compromised.
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