B1B91 RAM Code - Driver Seat Track Position Sensor Configuration Mismatch
Quick Answer
The Occupant Classification Module (OCM) monitors the Driver Seat Track Position Sensor. Common causes include Faulty Driver Seat Track Position Sensor, Driver Seat Track Position Sensor harness is open or shorted, Driver Seat Track Position 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
- B1B91 RAM indicates Driver Seat Track Position Sensor Configuration Mismatch.
- Common causes
- Common causes include Faulty Driver Seat Track Position Sensor, Driver Seat Track Position Sensor harness is open or shorted, Driver Seat Track Position 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 B1B91 RAM Description
What are the Possible Causes of the DTC B1B91 RAM?
- Faulty Driver Seat Track Position Sensor
- Driver Seat Track Position Sensor harness is open or shorted
- Driver Seat Track Position Sensor circuit poor electrical connection
- Faulty Occupant Classification Module (OCM)
How to Fix the DTC B1B91 RAM?
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 B1B91 RAM 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 B1B91 RAM Code
1. What does the OBDII code B1B91 mean in a RAM vehicle?
The B1B91 code indicates a "Driver Seat Track Position Sensor Configuration Mismatch," meaning the system has detected an issue with the configuration or calibration of the driver seat track position sensor.
2. What are the common symptoms of the B1B91 code?
Symptoms may include an illuminated airbag warning light, inability to adjust the driver seat properly, or issues with seat memory functions.
3. What causes the B1B91 code to appear?
The code is typically caused by a misconfigured seat position sensor, a faulty or damaged sensor, wiring issues, or improper calibration after seat component replacement.
4. Can the B1B91 code affect airbag deployment?
Yes, the code may impact airbag system functionality, as the seat position sensor provides data for proper deployment in a crash.
5. How is the B1B91 code diagnosed?
A technician will use a scan tool to read the code, inspect the seat position sensor and wiring, and verify proper configuration and calibration.
6. Can I drive my RAM vehicle with the B1B91 code active?
While the vehicle may still be operable, the airbag system could be compromised, posing a safety risk in the event of a collision.
7. How do you fix the B1B91 code?
Repairs may involve recalibrating the seat position sensor, replacing a damaged sensor, or repairing faulty wiring or connectors.
8. Do I need to replace the driver seat track to fix the B1B91 code?
Not necessarily. The issue often lies with the sensor, wiring, or calibration, so replacing the entire seat track is usually not required unless it's physically damaged.
9. How much does it cost to repair the B1B91 code?
Repair costs vary but can range from $100 to $300, depending on whether the sensor needs replacement or if only calibration or wiring repairs are required.
10. Can I reset the B1B91 code myself?
Resetting the code without addressing the root cause is not recommended, as the issue may persist or compromise safety systems. Always diagnose and repair the problem first.
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