AutoCodes – Ford – B1405 Ford

B1405 Ford Code - Driver 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 Driver Side Curtain, Driver Side Curtain harness is open or shorted, Driver 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: B1405 Ford indicates Driver Side Curtain Deployment Control 1 Circuit.
Common causes: Common causes include Faulty Driver Side Curtain, Driver Side Curtain harness is open or shorted, Driver 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 14,440

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 B1405 Ford 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 (refer to diagram below in illustration), 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 B1405 Ford - Driver Side Curtain Deployment Control 1 Circuit - AutoCodes.com — B1405 Ford Code - Driver Side Curtain Deployment Control 1 Circuit

What does this mean?

What are the Possible Causes of the DTC B1405 Ford?

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

How to Fix the DTC B1405 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

B1405:11 Driver Side Curtain Deployment Control 1 Circuit Short to Ground
B1405:12 Driver Side Curtain Deployment Control 1 Circuit Short to Battery
B1405:13 Driver Side Curtain Deployment Control 1 Circuit Open
B1405:1A Driver Side Curtain Deployment Control 1 Circuit Resistance Below Threshold

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1405 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 B1405 Ford code?

Need more information on how to fix the B1405 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1405 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 B1405 Ford Code

1. What are the common symptoms of OBDII code B1405 in a Ford related to the Driver Side Curtain Deployment Control 1 Circuit?

The common symptoms may include the airbag warning light illuminating on the dashboard, indicating a potential issue with the driver side curtain airbag system.

2. What are the possible causes of OBDII code B1405 in a Ford?

Possible causes of this code could be a faulty curtain airbag module, damaged wiring or connectors in the deployment circuit, or a malfunctioning impact sensor.

3. How serious is OBDII code B1405 in a Ford?

This code indicates a potential issue with the driver side curtain airbag deployment system, which is a crucial safety feature. It should be addressed promptly to ensure the proper functioning of the airbag system in the event of an accident.

4. Can I continue driving my Ford with OBDII code B1405 present?

It is not recommended to drive the vehicle with an active airbag system fault code like B1405. The airbag system may not deploy correctly in the event of a collision, compromising occupant safety.

5. How can I diagnose and repair OBDII code B1405 in my Ford?

Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault codes and then inspecting the curtain airbag system components for damage or malfunction. Repair may involve replacing the curtain airbag module, repairing damaged wiring, or addressing faulty connectors.

6. Is it possible to reset OBDII code B1405 in a Ford without fixing the underlying issue?

While you can clear the fault code temporarily, it will likely return until the underlying issue with the driver side curtain airbag system is resolved. It's essential to address the root cause of the problem to ensure proper airbag functionality.

7. Are there any safety precautions to take when working on the driver side curtain airbag system related to OBDII code B1405?

When working on the airbag system, always disconnect the vehicle's battery and wait for a specified time before starting any repairs. This precaution helps prevent accidental airbag deployment, which can be dangerous.

8. Can a DIY enthusiast fix OBDII code B1405 in a Ford, or is professional help required?

Repairing issues related to airbag systems, including code B1405, can be complex and potentially dangerous if not done correctly. It is advisable to seek professional help or consult a qualified mechanic with experience in handling airbag systems.

9. How much does it typically cost to repair OBDII code B1405 in a Ford?

The cost of repairing this code can vary depending on the specific issue causing it. Expenses may include diagnostic fees, replacement parts, and labor costs. It's recommended to get a detailed estimate from a trusted mechanic.

10. Will fixing OBDII code B1405 in my Ford require reprogramming or recalibration of any components?

After replacing certain components like the curtain airbag module, reprogramming or recalibrating may be necessary to ensure proper communication and functionality within the airbag system. It's essential to follow the manufacturer's guidelines for such procedures.