AutoCodes – Lincoln – B1408 Lincoln

B1408 Lincoln Code - Passenger Side Curtain Deployment Control 1 Circuit

Quick Answer

The Restraint Control Module (RCM) analyzes the deployment loop resistance to determine if a fault exists. Common causes include Faulty Passenger Side Curtain, Passenger Side Curtain harness is open or shorted, Passenger Side Curtain 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: B1408 Lincoln indicates Passenger Side Curtain Deployment Control 1 Circuit.
Common causes: Common causes include Faulty Passenger Side Curtain, Passenger Side Curtain harness is open or shorted, Passenger Side Curtain 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 1,302

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 B1408 Lincoln Description

The Restraint Control Module (RCM) analyzes the deployment loop resistance to determine if a fault exists. The value displayed in the PID is the deployment loop resistance measured by the RCM. If the value displayed is lower or higher than the desired range, the RCM can set a Diagnostic Trouble Code (DTC). As the deployment loop resistance drifts farther outside the desired range, the chance for a DTC increases. Small variations in resistance can occur due to the effect of road vibrations on terminal fit. Crimps and terminals can be affected by stress and harness movement and can cause an increase in resistance due to wire strain. These variables can result in an intermittent fault. For this reason, the test requires the PID value to be within the desired range before the fault is considered repaired, regardless if the module is reporting an on-demand DTC at the time of diagnosis. Following this direction helps make sure that minor changes in resistance do not create a repeat concern.

OBDII Code B1408 Lincoln - Passenger Side Curtain Deployment Control 1 Circuit - AutoCodes.com — B1408 Lincoln Code - Passenger Side Curtain Deployment Control 1 Circuit

What does this mean?

What are the Possible Causes of the DTC B1408 Lincoln?

Faulty Passenger Side Curtain
Passenger Side Curtain harness is open or shorted
Passenger Side Curtain circuit poor electrical connection
Faulty Restraint Control Module (RCM)

How to Fix the DTC B1408 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 does this mean?

Code Tech Notes

B1408:11 Passenger Side Curtain Deployment Control 1 Circuit Short to Ground
B1408:12 Passenger Side Curtain Deployment Control 1 Circuit Short to Battery
B1408:13 Passenger Side Curtain Deployment Control 1 Circuit Open
B1408:1A Passenger Side Curtain Deployment Control 1 Circuit Resistance Below Threshold

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1408 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 B1408 Lincoln code?

Need more information on how to fix the B1408 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1408 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 B1408 Lincoln Code

1. What are common symptoms of OBDII code B1408 in a Lincoln related to the Passenger Side Curtain Deployment Control 1 Circuit?

The common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the passenger side curtain airbag during a collision.

2. What are possible causes of OBDII code B1408 in a Lincoln?

Possible causes of this code include a faulty passenger side curtain airbag module, damaged wiring or connectors in the deployment system, or a problem with the airbag control module.

3. How can I diagnose the issue causing OBDII code B1408 in my Lincoln?

Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault codes, inspecting the wiring and connectors for any visible damage, and testing the components in the passenger side curtain airbag system for proper functioning.

4. Can I still drive my Lincoln with OBDII code B1408 present?

It is not recommended to drive the vehicle with this code present, as it indicates a potential issue with the passenger side curtain airbag system, which could affect its performance in the event of a collision.

5. How can I repair OBDII code B1408 in my Lincoln?

Repairing this code may involve replacing the faulty passenger side curtain airbag module, repairing or replacing damaged wiring or connectors, or reprogramming the airbag control module to clear the fault.

6. Are there any safety concerns associated with OBDII code B1408 in a Lincoln?

Yes, there are safety concerns associated with this code, as the passenger side curtain airbag may not deploy correctly in the event of a collision, potentially increasing the risk of injury to the occupants.

7. Can I reset OBDII code B1408 in my Lincoln with a simple reset tool?

While you may be able to clear the code temporarily with a reset tool, it is important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it typically cost to repair OBDII code B1408 in a Lincoln?

The cost of repairing this code can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Will OBDII code B1408 cause my Lincoln to fail a state inspection?

Yes, this code will likely cause your Lincoln to fail a state inspection, as it indicates a fault in the passenger side curtain airbag system, which is a critical safety component.

10. Is OBDII code B1408 specific to Lincoln vehicles, or can it occur in other makes and models?

While this specific code may be unique to Lincoln vehicles, similar issues with the passenger side curtain airbag system can occur in other makes and models, resulting in different OBDII fault codes.