B140C Lincoln Code - Second Row Driver Side Seatbelt Sensor Circuit
Quick Answer
The Restraint Control Module (RCM) continuously monitors the second row left safety belt buckle switch circuits for the following faults: Open circuit, Short to voltage, Short to ground, Current out of range, Faulted second row left safety belt buckle switch. Common causes include Faulty Second Row Driver Side Seatbelt, Second Row Driver Side Seatbelt harness is open or shorted, Second Row Driver 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
- B140C Lincoln indicates Second Row Driver Side Seatbelt Sensor Circuit.
- Common causes
- Common causes include Faulty Second Row Driver Side Seatbelt, Second Row Driver Side Seatbelt harness is open or shorted, Second Row Driver 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 B140C Lincoln Description
What are the Possible Causes of the DTC B140C Lincoln?
- Faulty Second Row Driver Side Seatbelt
- Second Row Driver Side Seatbelt harness is open or shorted
- Second Row Driver Side Seatbelt circuit poor electrical connection
- Faulty Restraint Control Module (RCM)
How to Fix the DTC B140C Lincoln?
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
B140C:12 Second Row Driver Side Seatbelt Sensor Circuit Short to Battery
B140C:13 Second Row Driver Side Seatbelt Sensor Circuit Open
B140C:1D Second Row Driver Side Seatbelt Sensor Circuit Current Out of Range
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B140C Lincoln 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 B140C Lincoln Code
1. What are the common symptoms of OBDII code B140C in a Lincoln related to the Second Row Driver Side Seatbelt Sensor Circuit?
- Common symptoms include the airbag warning light being illuminated on the dashboard and potential issues with the seatbelt sensor system.
2. What are the possible causes of OBDII code B140C in a Lincoln related to the Second Row Driver Side Seatbelt Sensor Circuit?
- The code B140C can be triggered by issues such as a faulty seatbelt sensor, damaged wiring, or a malfunctioning airbag control module.
3. How can I diagnose the OBDII code B140C in a Lincoln related to the Second Row Driver Side Seatbelt Sensor Circuit?
- Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the seatbelt sensor and its wiring for damage, and checking the airbag system for any related issues.
4. Is it safe to drive with OBDII code B140C related to the Second Row Driver Side Seatbelt Sensor Circuit in a Lincoln?
- It is recommended not to drive the vehicle until the issue is diagnosed and repaired, as the seatbelt sensor system is an important safety feature that may affect the airbag deployment in case of an accident.
5. Can I reset the OBDII code B140C related to the Second Row Driver Side Seatbelt Sensor Circuit in a Lincoln by disconnecting the battery?
- While disconnecting the battery may clear the code temporarily, it is not a recommended solution. The underlying issue causing the code needs to be identified and fixed to ensure proper functionality of the seatbelt sensor system.
6. Are there any DIY repair tips for fixing OBDII code B140C related to the Second Row Driver Side Seatbelt Sensor Circuit in a Lincoln?
- DIY repairs for this code may include checking and repairing any damaged wiring, ensuring the seatbelt sensor is properly connected, and clearing the code with an OBDII scanner after making necessary repairs.
7. How much does it typically cost to repair OBDII code B140C related to the Second Row Driver Side Seatbelt Sensor Circuit in a Lincoln?
- The cost of repair can vary depending on the exact cause of the issue. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.
8. Can a faulty seatbelt sensor cause other OBDII codes to appear in a Lincoln?
- Yes, a faulty seatbelt sensor can potentially trigger other OBDII codes related to the airbag system or seatbelt safety features in the vehicle.
9. Does the OBDII code B140C related to the Second Row Driver Side Seatbelt Sensor Circuit in a Lincoln affect the functionality of the airbags?
- Yes, this code is related to the seatbelt sensor system, which plays a crucial role in the proper deployment of airbags in the event of a collision. It is important to address this issue promptly.
10. How long does it take to repair OBDII code B140C related to the Second Row Driver Side Seatbelt Sensor Circuit in a Lincoln?
- The repair time can vary depending on the exact cause of the issue and the extent of repairs needed. It is advisable to consult a professional mechanic for a more accurate estimate of the repair duration.
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