B140D Code - Second Row Passenger Side Seatbelt Sensor Circuit
Quick Answer
The Restraint Control Module (RCM) continuously monitors the second row right safety belt buckle switch circuits for the following faults: Open circuit, Short to voltage, Short to ground, Current out of range, Faulted second row right safety belt buckle switch. Common causes include Faulty Second Row Passenger Side Seatbelt, Second Row Passenger Side Seatbelt harness is open or shorted, Second Row Passenger Side Seatbelt 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
- B140D indicates Second Row Passenger Side Seatbelt Sensor Circuit.
- Common causes
- Common causes include Faulty Second Row Passenger Side Seatbelt, Second Row Passenger Side Seatbelt harness is open or shorted, Second Row Passenger Side Seatbelt 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 B140D Description
What are the Possible Causes of the DTC B140D?
- Faulty Second Row Passenger Side Seatbelt
- Second Row Passenger Side Seatbelt harness is open or shorted
- Second Row Passenger Side Seatbelt circuit poor electrical connection
- Faulty Restraint Control Module (RCM)
How to Fix the DTC B140D?
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.
Code Tech Notes
B140D:12 Second Row Passenger Side Seatbelt Sensor Circuit Short to Battery
B140D:13 Second Row Passenger Side Seatbelt Sensor Circuit Open
B140D:1D Second Row Passenger Side Seatbelt Sensor Circuit Current Out of Range
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B140D 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
- B140D Ford — Second Row Passenger Side Seatbelt Sensor Circuit
- B140D Lincoln — Second Row Passenger Side Seatbelt Sensor Circuit
- B140D Mercury — Second Row Passenger Side Seatbelt Sensor Circuit
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 B140D Code
1. What are the common symptoms of OBDII code B140D related to the Second Row Passenger Side Seatbelt Sensor Circuit?
The common symptoms include the airbag warning light staying illuminated on the dashboard and potential issues with the passenger side seatbelt system.
2. What are the possible causes of OBDII code B140D for the Second Row Passenger Side Seatbelt Sensor Circuit?
Potential causes include a faulty seatbelt sensor, damaged wiring or connections, or issues with the airbag control module.
3. How can I diagnose the OBDII code B140D for the Second Row Passenger Side Seatbelt Sensor Circuit?
Diagnosis involves using an OBDII scanner to retrieve the specific error code, inspecting the seatbelt sensor and related components for damage, and checking the wiring for any faults.
4. Can I continue to drive my vehicle with OBDII code B140D related to the Second Row Passenger Side Seatbelt Sensor Circuit?
It is not recommended to drive the vehicle with this code present, as it may indicate potential safety issues with the airbag system or seatbelt sensor.
5. What are the repair options for fixing OBDII code B140D for the Second Row Passenger Side Seatbelt Sensor Circuit?
Repair options include replacing the faulty seatbelt sensor, repairing damaged wiring or connections, or resetting the airbag control module after addressing the underlying issue.
6. How much does it typically cost to repair OBDII code B140D for the Second Row Passenger Side Seatbelt Sensor Circuit?
Repair costs can vary depending on the specific cause of the issue, but they may range from $100 to $300 for parts and labor.
7. Can I reset the OBDII code B140D related to the Second Row Passenger Side Seatbelt Sensor Circuit myself?
While you can clear the error code using an OBDII scanner, it is important to diagnose and address the root cause of the issue to ensure the safety systems function properly.
8. Are there any preventive maintenance tips to avoid encountering OBDII code B140D for the Second Row Passenger Side Seatbelt Sensor Circuit?
Regularly inspecting the seatbelt system for any signs of damage, ensuring proper connections, and addressing any warning lights promptly can help prevent issues related to this code.
9. Is it safe to drive with the airbag warning light on due to OBDII code B140D for the Second Row Passenger Side Seatbelt Sensor Circuit?
Driving with the airbag warning light on is not advisable, as it indicates potential problems with the airbag system that may affect its functionality in the event of an accident.
10. How long does it typically take to repair OBDII code B140D for the Second Row Passenger Side Seatbelt Sensor Circuit?
The repair time can vary depending on the exact cause of the issue and the complexity of the repair, but it may take anywhere from 1 to 3 hours to complete the necessary fixes.
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