How to fix Nissan B1049 error?

The B1049 Nissan code indicates a problem with the driver side airbag deployment circuit. This code is stored in the vehicle’s engine control module (ECM) when there is an issue with the airbag circuit that prevents the airbag from deploying properly in the event of a crash.

Possible causes of the B1049 code include:

– Faulty Driver Air Bag – highly unlikely airbags don’t fail

– Faulty Spiral Cable – most likely

– Driver Air Bag harness is open

– Driver Air Bag circuit poor electrical connection

What exactly is an SRS airbag module reset?

  • Faulty airbag sensor: The airbag sensor is responsible for detecting a crash and sending a signal to the ECM to deploy the airbag. If the sensor is malfunctioning, it may not send the proper signal, resulting in the B1049 code.
  • Wiring issues: The airbag circuit is connected to various wiring harnesses and connectors. If there is a problem with the wiring, such as a broken wire or a loose connection, the airbag may not deploy properly.
  • The driver’s airbag circuit is experiencing high resistance, which is most likely caused by a malfunctioning spiral cable. This cable serves as the connection between the airbag and the steering column and can become damaged over time. The spiral cable is also commonly referred to as a clock spring. A diagnostic machine can confirm this issue and the best solution would be to replace the spiral cable.


Solutions for the B1049 code include:

  • Replace the airbag sensor: If the sensor is found to be faulty, it will need to be replaced.
  • Check and repair the wiring: Any damaged or loose wiring should be repaired or replaced.


In order to diagnose the B1049 code, a professional diagnostic scan tool will be required to read the code and retrieve any additional trouble codes that may be stored in the ECM. Once the code has been diagnosed and the problem has been identified, the appropriate repair can be made to fix the issue.

SRS Module Repair and Reset

You may have hard crash codes now being stored in the SRS airbag module, and it can be costly to replace. You can simply remove the airbag module from your vehicle and mail it to Safety Restore for an OEM reset.


Before working on the SRS system, ensure the ignition switch is turned off and both battery cables are disconnected. Allow a minimum of 5 – 10 minutes to pass before proceeding with any servicing. During this time, it is possible for the airbag and seat belt pre-tensioner to deploy. It is important to wait at least 5 to 10 minutes before handling any SRS connectors or wires to avoid any potential hazards.

What exactly is an SRS airbag module reset?

We here at offer a nationwide airbag module reset service for just $49.99. Our turnaround time is 24 hours and we offer a lifetime guarantee. To get your airbag module reset is very simple, simply follow the steps below:


  1. Purchase the airbag module reset service on our website here: OEM Airbag Module Reset
  2. Remove your airbag module and ship it to us.
  3. We will have it reset within 24 hours and send it back to you.
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