B1995 OBD-II Trouble Code: Driver Side Side-Mount Air Bag Low Resistance on Squib

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Cost of diagnosing the B1995 code

B1995 is a diagnostic trouble code (DTC) for "Driver Side Side-Mount Air Bag Low Resistance on Squib". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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B1995 code definition

A B1995 trouble code signifies to the Powertrain Control Module (PCM) that there is a problem with the squib in the driver's side side-mount air bag. Other codes the PCM might store in conjunction with this trouble code include a B1992, B1993, B1994, B1996, B1997, B1998, and B1999 code.

What the B1995 code means

In an air bag, the squib initiates the deployment process of the air bag in a collision. When the squib voltage to the PCM is lower than manufacturer specifications, a B1995 trouble code is stored and the SRS light illuminates.

What causes the B1995 code?

The causes of a B1995 code can include a bad squib, loose or faulty wiring or connectors, and a bad battery. A loose or corroded battery connection can also lead to storage of this code.

What are the symptoms of the B1995 code?

Symptoms of a B1995 trouble code include the illumination of the SRS warning light. Also, if the SRS warning light stops working, the PCM usually notifies the driver through a series of tones while the vehicle is in operation.

How does a mechanic diagnose the B1995 code?

To diagnose a B1995 trouble code, a mechanic needs an advanced scanner and a digital volt/ohm meter. They must also use an SRS air bag load tool and a wiring schematic for the driver's side, side mount air bag wiring harness when performing a diagnostic of the air bag unit. In addition, the mechanic must take the following steps:

  • Clear the code and test drive the vehicle to see if it returns. If the trouble code persists, download any stored codes and the freeze frame data for further analysis if needed.

  • Disconnect both battery cables and allow the vehicle to sit for at least three minutes before proceeding.

  • Inspect all wiring, connectors, and components in the driver's side side-mount air bag wiring harness looking for faulty, loose, or damaged connect items.

  • Test the battery to see if it is fully charged. If the battery is not fully charged, charge it before proceeding.

  • Turn the ignition on and then reconnect the battery.

  • Connect the SRS air bag load tool and check any codes on the associated air bag control unit.

  • Next, turn the ignition off and disconnect the battery again, waiting at least three minutes before proceeding.

  • Disconnect the SRS air bag load tool and the air bag control module.

  • Using a digital volt/ohm meter, test the resistance of the driver's side, side mount air bag circuits between the ground and the driver's side, side mount air bag squib connector.

  • Reconnect the battery with the ignition on.

  • Test the connection of the wiring harness and connectors by wiggling the wires and connectors, looking for looseness.

  • Clear the code and retest the system to see if the B1995 trouble code returns.

Common mistakes when diagnosing the B1995 code

When diagnosing a B1995 trouble code, mechanics often replace the driver's side, side mount air bag circuit without checking the wiring or connectors fully. The result is that the problem is not fixed, in the case of faulty wiring, and the code returns.

How serious is the B1995 code?

Vehicle owners should have a B1995 trouble code diagnosed and repaired as soon as possible. A B1995 trouble code can lead to a failure to deploy on the part of the driver's side, side mount air bag during a collision, leading to injury or even death depending on the severity of the impact.

What repairs can fix the B1995 code?

To repair a B1995 trouble, a mechanic needs to perform the following:

  • Replace any faulty or damaged wiring, connectors, or components.

  • Replace the battery if it is bad.

  • Clean the battery cable connectors and battery posts, and make sure the connection is tight when reattaching the battery.

  • Replace the driver's side side-mount air bag if it is at fault.

  • Replace the air bag control unit if it is bad.

  • Make sure all wiring and connectors are securely connected.

Additional comments for consideration regarding the B1995 code

Before examining the driver's side side-mount air bag, the mechanic should first disconnect both battery cables. In addition, the mechanic should wait at least three minutes before proceeding with the inspection, as an air bag can still deploy within this timeframe after the mechanic disconnects the device.

Need help with a B1995 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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