B1B7F Code - Passenger Seat Weight Sensor 2 Right Front 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 Right Front Passenger Seat Weight Sensor, Right Front Passenger Seat Weight Sensor harness is open or shorted, Right 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
- B1B7F indicates Passenger Seat Weight Sensor 2 Right Front Input Circuit High.
- Common causes
- Common causes include Faulty Right Front Passenger Seat Weight Sensor, Right Front Passenger Seat Weight Sensor harness is open or shorted, Right 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.
Code B1B7F Description
What are the Possible Causes of the DTC B1B7F?
- Faulty Right Front Passenger Seat Weight Sensor
- Right Front Passenger Seat Weight Sensor harness is open or shorted
- Right Front Passenger Seat Weight Sensor circuit poor electrical connection
- Faulty Occupant Classification Module (OCM)
How to Fix the DTC B1B7F?
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 B1B7F 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
- B1B7F Chrysler — Passenger Seat Weight Sensor 2 Right Front Input Circuit High
- B1B7F Dodge — Passenger Seat Weight Sensor 2 Right Front Input Circuit High
- B1B7F Jeep — Passenger Seat Weight Sensor 2 Right Front Input Circuit High
- B1B7F Mitsubishi — Passenger Seat Weight Sensor 2 Right Front Input Circuit High
- B1B7F RAM — Passenger Seat Weight Sensor 2 Right Front 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 B1B7F Code
1. What does OBDII code B1B7F mean?
Code B1B7F indicates a problem with the Passenger Seat Weight Sensor 2 Right Front Input Circuit, specifically a high voltage condition.
2. What are the common symptoms of code B1B7F?
Symptoms may include the airbag warning light being illuminated, passenger airbag deactivation, or inconsistent detection of a passenger in the front seat.
3. What causes the B1B7F code to appear?
Common causes include a faulty passenger seat weight sensor, damaged wiring or connectors, or a malfunctioning airbag control module.
4. Is it safe to drive with a B1B7F code?
It may not be safe, as this code can affect the functionality of the passenger airbag system, potentially preventing it from deploying in an accident.
5. How can I diagnose the B1B7F code?
Use an OBDII scanner to confirm the code, then inspect the passenger seat weight sensor, its wiring, and connectors for damage or loose connections.
6. Can I fix the B1B7F code myself?
If you're experienced with vehicle electronics, you can check and repair damaged wiring or replace the weight sensor. Otherwise, it’s best to consult a professional mechanic.
7. How much does it cost to fix the B1B7F code?
Repair costs vary but may range from $100 to $500, depending on whether the issue is wiring-related or requires sensor or module replacement.
8. Will clearing the code with a scanner fix the problem?
Clearing the code may turn off the warning temporarily, but the issue will return unless the underlying problem is resolved.
9. Can a faulty passenger weight sensor cause other issues?
Yes, a faulty sensor can compromise airbag functionality, lead to incorrect passenger detection, and potentially trigger additional fault codes.
10. How can I prevent the B1B7F code from recurring?
Ensure regular inspection of the passenger seat area, avoid placing heavy objects on the seat, and keep the sensor and wiring free from damage or moisture.
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