AutoCodes – Ford – B140C Ford

B140C Ford 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 Ford 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.

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Code Popularity 9,327

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 04, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B140C Ford Description

OBDII Code B140C Ford - Second Row Driver Side Seatbelt Sensor Circuit - AutoCodes.com — B140C Ford Code - Second Row Driver Side Seatbelt Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B140C Ford?

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 Ford?

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 does this mean?

Code Tech Notes

B140C:11 Second Row Driver Side Seatbelt Sensor Circuit Short to Ground
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 Ford 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.

Need more information about the B140C Ford code?

Need more information on how to fix the B140C Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B140C Ford code diagnosed by a professional: Find a repair shop in your area

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.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B140C Ford Code

1. What are the common symptoms of OBDII code B140C Ford?

- The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the second-row driver side seatbelt sensor.

2. What are the possible causes of OBDII code B140C Ford?

- Possible causes may include a faulty seatbelt sensor, damaged wiring or connectors in the seatbelt sensor circuit, or a malfunctioning airbag control module.

3. How can I diagnose the issue related to OBDII code B140C Ford?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the seatbelt sensor and its wiring for damage, and testing the related components for proper functionality.

4. Can I repair the Second Row Driver Side Seatbelt Sensor Circuit issue myself?

- While some basic troubleshooting steps can be performed at home, repairing the seatbelt sensor circuit may require specialized tools and expertise. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

5. Is it safe to drive with OBDII code B140C Ford present?

- It is not recommended to drive with the airbag or seatbelt sensor system compromised, as it may affect the proper functioning of crucial safety features in the event of an accident. It is advised to address the issue promptly.

6. How much does it typically cost to repair OBDII code B140C Ford?

- The cost of repairing this code can vary depending on the specific issue causing it, the extent of the damage, and labor rates in your area. It is best to obtain quotes from local repair shops for an accurate estimate.

7. Are there any temporary fixes for OBDII code B140C Ford?

- Temporary fixes such as resetting the fault code with a diagnostic scanner may temporarily clear the warning light, but the underlying issue will still need to be addressed to ensure the safety systems are functioning correctly.

8. Can a faulty seatbelt sensor cause other problems in the vehicle?

- A faulty seatbelt sensor can potentially impact the overall airbag system's performance and may lead to issues with airbag deployment in the event of a collision. It is crucial to address any seatbelt sensor issues promptly.

9. How long does it typically take to repair the Second Row Driver Side Seatbelt Sensor Circuit?

- The repair time can vary depending on the specific issue and the complexity of accessing and repairing the seatbelt sensor circuit. It is best to consult with a mechanic for an estimated repair timeline.

10. Will OBDII code B140C Ford cause my vehicle to fail a state inspection?

- Depending on the regulations in your state, a malfunctioning airbag or seatbelt sensor system may cause your vehicle to fail a state inspection due to safety concerns. It is advisable to address the issue before undergoing an inspection.