AutoCodes – Mercury – B1407 Mercury

B1407 Mercury Code - Passenger Side Airbag Deployment Control 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 Airbag, Passenger Side Airbag harness is open or shorted, Passenger Side 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: B1407 Mercury indicates Passenger Side Airbag Deployment Control Circuit.
Common causes: Common causes include Faulty Passenger Side Airbag, Passenger Side Airbag harness is open or shorted, Passenger Side 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 769

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 B1407 Mercury 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 B1407 Mercury - Passenger Side Airbag Deployment Control Circuit - AutoCodes.com — B1407 Mercury Code - Passenger Side Airbag Deployment Control Circuit

What does this mean?

What are the Possible Causes of the DTC B1407 Mercury?

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

How to Fix the DTC B1407 Mercury?

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

B1407:11 Passenger Side Airbag Deployment Control Circuit Short to Ground
B1407:12 Passenger Side Airbag Deployment Control Circuit Short to Battery
B1407:13 Passenger Side Airbag Deployment Control Circuit Open
B1407:1A Passenger Side Airbag Deployment Control Circuit Resistance Below Threshold

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1407 Mercury 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 B1407 Mercury code?

Need more information on how to fix the B1407 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1407 Mercury 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 B1407 Mercury Code

1. What are the common symptoms of OBDII code B1407 in a Mercury related to the passenger side airbag deployment control circuit?

- The common symptoms may include the airbag warning light illuminating on the dashboard and potential issues with the passenger side airbag deployment.

2. What are the possible causes of OBDII code B1407 in a Mercury?

- The code B1407 in a Mercury can be caused by a faulty passenger side airbag deployment control circuit, damaged wiring, a defective airbag module, or a malfunctioning sensor.

3. How can I diagnose the OBDII code B1407 in my Mercury?

- To diagnose the code B1407, it is recommended to use an OBDII scanner to retrieve the specific fault code and then inspect the passenger side airbag deployment control circuit, wiring, and related components for any visible damage or issues.

4. Is it safe to drive my Mercury with OBDII code B1407 present?

- It is not recommended to drive the vehicle with an active OBDII code B1407 related to the passenger side airbag deployment control circuit, as it may affect the proper functioning of the airbag system in case of an accident.

5. How can I repair OBDII code B1407 in my Mercury?

- Repairing the OBDII code B1407 in a Mercury typically involves fixing the issues with the passenger side airbag deployment control circuit, repairing or replacing damaged wiring, addressing any faults in the airbag module, and ensuring all connections are secure.

6. Can I reset the OBDII code B1407 in my Mercury without fixing the underlying issue?

- While you can clear the OBDII code B1407 using an OBDII scanner, it is important to address the underlying issue causing the code to prevent potential safety hazards related to the passenger side airbag system.

7. Are there any recalls or technical service bulletins related to OBDII code B1407 in Mercury vehicles?

- It is recommended to check with the manufacturer or authorized dealerships for any recalls or technical service bulletins related to OBDII code B1407 in Mercury vehicles, as there may be specific repair instructions or solutions provided.

8. How much does it typically cost to repair OBDII code B1407 in a Mercury?

- The cost of repairing OBDII code B1407 in a Mercury can vary depending on the specific issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to obtain quotes from different repair facilities.

9. Can I fix OBDII code B1407 in my Mercury by myself, or do I need to take it to a professional mechanic?

- Fixing OBDII code B1407 in a Mercury may require specialized tools and knowledge of airbag systems. It is recommended to consult a professional mechanic or technician with experience in diagnosing and repairing airbag-related issues.

10. How can I prevent OBDII code B1407 from recurring in my Mercury?

- To prevent OBDII code B1407 from recurring in your Mercury, it is essential to perform regular maintenance checks on the airbag system, address any warning signs promptly, and follow the manufacturer's recommended service schedule for your vehicle.