AutoCodesGeneric – B1407

B1407 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 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 12,628
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 04, 2019
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Code B1407 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 - Passenger Side Airbag Deployment Control Circuit - AutoCodes.com
B1407 Code - Passenger Side Airbag Deployment Control Circuit

What are the Possible Causes of the DTC B1407?

  • 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?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1407 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 code?

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

Need Help with the Code?

Get the B1407 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 Code

1. What does the OBDII code B1407 mean?

B1407 indicates an issue with the passenger side airbag deployment control circuit, which may prevent the airbag from deploying correctly in an accident.

2. What are the common symptoms of code B1407?

Symptoms include the airbag warning light staying on, a stored B1407 code, and possible inoperability of the passenger side airbag.

3. What causes the B1407 code to appear?

Common causes include damaged wiring, a faulty passenger airbag module, a malfunctioning airbag control module, or poor electrical connections.

4. Is it safe to drive with a B1407 code?

It’s not recommended to drive with this code active, as it may indicate the passenger airbag won’t deploy in a collision, compromising safety.

5. How is a B1407 code diagnosed?

A technician will inspect the airbag system, check the wiring and connectors for damage, and use a scan tool to test the airbag control circuit.

6. Can a blown fuse cause the B1407 code?

Yes, a blown fuse in the airbag system can disrupt the passenger airbag circuit and trigger the B1407 code.

7. How can I fix the B1407 code?

Repairs may involve replacing damaged wiring, repairing connectors, or replacing the passenger airbag module or control unit.

8. How much does it cost to fix the B1407 code?

Costs can vary depending on the issue but typically range from $100 for wiring repairs to $1,000 or more for module replacement.

9. Can I clear the B1407 code without repairs?

Clearing the code without addressing the root cause will not fix the problem, and the code is likely to return.

10. What tools are needed to troubleshoot the B1407 code?

You’ll need an OBDII scanner, a multimeter for testing electrical circuits, and potentially a wiring diagram for the airbag system.

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