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Engine-Codes - Ford - B140C FORD

B140C FORD - Second Row Driver Side Seatbelt Sensor Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B140C FORD Possible Causes

What does this mean?
  • 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 is the B140C FORD code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

What does this mean?
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 B140C FORD code

Labor: 1.0

The cost to diagnose the B140C FORD code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Air Bag Warning Light ON

B140C FORD Meaning

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. If a fault is detected, the RCM stores Diagnostic Trouble Code (DTC) B140C in memory and sends a message to the IPC to illuminate the airbag warning indicator.

More Information

Need more information on how to fix the B140C FORD code?
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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.

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