Engine-Codes - Generic - B140C

B140C Code - Second Row Driver Side Seatbelt Sensor Circuit

- Code Popularity: 2,593 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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|What are the Possible Causes of the Code B140C?

  • 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 B140C Code?

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.

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|Code B140C 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 B140C?

Labor: 1.0

The cost to diagnose the B140C code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code B140C Possible Symptoms?

  • Air Bag Warning Light ON

|What Does the B140C Code Mean?

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.

B140C Code - Second Row Driver Side Seatbelt Sensor Circuit

|Need more Information on the B140C Code?

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

|Code B140C Information for Specific Makes

  • B140C Ford Second Row Driver Side Seatbelt Sensor Circuit
  • B140C Lincoln Second Row Driver Side Seatbelt Sensor Circuit
  • B140C Mercury Second Row Driver Side Seatbelt Sensor Circuit

|Need Help with the B140C Code?

Get the B140C 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.

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