AutoCodes – Lincoln – B1993 Lincoln

B1993 Lincoln Code - Driver Side Side Mount Airbag Circuit Short To Ground

Quick Answer

The Restraints Control Module (RCM) monitors the Driver Side Side Mount Airbag. Common causes include Faulty Driver Side Side Mount Airbag, Driver Side Side Mount Airbag harness is open or shorted, Driver Side Side Mount Airbag 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: B1993 Lincoln indicates Driver Side Side Mount Airbag Circuit Short To Ground.
Common causes: Common causes include Faulty Driver Side Side Mount Airbag, Driver Side Side Mount Airbag harness is open or shorted, Driver Side Side Mount Airbag 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 504

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 Aug 03, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1993 Lincoln Description

The Restraints Control Module (RCM) monitors the Driver Side Side Mount Airbag. The RCM sets the OBDII code when the Driver Side Side Mount Airbag is not to factory specifications.

OBDII Code B1993 Lincoln - Driver Side Side Mount Airbag Circuit Short To Ground - AutoCodes.com — B1993 Lincoln Code - Driver Side Side Mount Airbag Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1993 Lincoln?

Faulty Driver Side Side Mount Airbag
Driver Side Side Mount Airbag harness is open or shorted
Driver Side Side Mount Airbag circuit poor electrical connection
Faulty Restraints Control Module (RCM)

How to Fix the DTC B1993 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1993 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.

Need more information about the B1993 Lincoln code?

Need more information on how to fix the B1993 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1993 Lincoln 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 B1993 Lincoln Code

1. What does OBDII code B1993 mean on a Lincoln?

Code B1993 indicates a short to ground in the driver-side side mount airbag circuit, which can prevent the airbag from deploying properly in a collision.

2. What are the common symptoms of code B1993?

The airbag warning light will illuminate, and the airbags on the driverâ€™s side may not function properly in an accident.

3. What causes the B1993 code to appear?

Common causes include damaged wiring, a shorted or corroded electrical connector, a faulty airbag module, or issues with the clock spring.

4. Is it safe to drive with a B1993 code?

Driving with a B1993 code is not recommended as the airbag system may be compromised, reducing safety in the event of a collision.

5. How can I diagnose the B1993 code?

Start by inspecting the wiring and connectors for damage or corrosion, check the clock spring for faults, and use a scan tool to verify the fault and reset the code after repairs.

6. Can a damaged clock spring cause the B1993 code?

Yes, a damaged or faulty clock spring can cause a short in the airbag circuit, leading to the B1993 code.

7. How much does it cost to fix a B1993 code?

Repair costs vary depending on the issue, but addressing damaged wiring or connectors may cost $100-$200, while replacing a clock spring or airbag module could cost several hundred dollars.

8. Can the B1993 code be caused by water damage?

Yes, water intrusion can corrode connectors or wiring, creating a short to ground in the airbag circuit.

9. Do I need a professional to fix the B1993 code?

While basic inspections can be done at home, repairs involving the airbag system are best handled by a qualified technician to ensure safety.

10. Will clearing the B1993 code with a scan tool fix the issue?

No, simply clearing the code will not fix the underlying issue. The root cause of the short to ground must be addressed to prevent the code from returning.