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B1922 OBD-II Trouble Code: Air Bag Safing Sensor Output Circuit Short To Battery

diagnostic check engine light

B1922 code definition

A B1922 trouble code indicates that the vehicle's Engine Control Unit (ECU) has detected a short circuit related to the airbag deployment system's safing sensor.

What the B1922 code means

An airbag's safing sensor acts as a failsafe to ensure the airbag won't deploy without due cause or a crash sensor malfunction. If the safing sensor circuit has shorted, this will disable the safing sensor, and consequently restrict use of the airbag deployment system until such a time that the trouble code is properly addressed.

What causes the B1922 code?

In the event of a B1922 code, the safing sensor may be malfunctioning. Broken, disconnected, faulty or otherwise damaged electrical wiring may be to blame for a circuit short. The safing sensor's charging source may be overcompensating. In rarer circumstances, the ECU itself may be wrongly reporting the problem.

What are the symptoms of the B1922 code?

Without a safing sensor to help trigger the airbag, the airbag feature should be considered disabled so long as the B1922 goes unaddressed. In addition, a shorted circuit may have blown or damaged other components related to the circuit; fried parts will need to be replaced. As well, the practical symptoms of a B1922 code will be accompanied by an illuminated check engine lamp and stored B1922 trouble code.

How does a mechanic diagnose the B1922 code?

A mechanic can diagnose the B1922 trouble code by inputting the vehicle computer with an OBD-II code reader. A voltmeter or Autohex scanner can be used to pinpoint the source of the short damage along the circuit. The safing sensor itself should be checked over and tested for signs of damage or faultiness. Any components or circuitry between the safing sensor and the ECU should be looked over to see if they're the cause of the circuit malfunction.

Common mistakes when diagnosing the B1922 code

Body-related trouble codes may stand for a number of different issues depending on the type of vehicle. Repairs for one B1922 code interpretation may be confused with another. Refer to the vehicle's user manual or contact the manufacturer if you're uncertain.

How serious is the B1922 code?

A B1922 trouble code will not affect a vehicle's drivability. However, the lack of a working airbag is a safety hazard. If you choose to operate the vehicle without a functioning airbag, take care to ensure the vehicle's seatbelt features are properly adjusted and optimised. It is not recommended to operate a vehicle without all of the safety features functioning properly.

What repairs can fix the B1922 code?

If the safing sensor was identified as faulty or even damaged by the shorted circuit, it should be repaired accordingly, or even replaced if the damage warrants it. Any disconnected, corroded, broken or damaged wiring should be repaired or replaced accordingly. Alternatively, the entire airbag module can be replaced to save on diagnosing and repairing individual parts, but the unnecessary expense makes this course of action inadvisable. After you make your repairs to solve the B1922 code, the vehicle should be retested.

Additional comments for consideration regarding the B1922 code

In most cases, the safing sensor can be found behind the kick panel on the passenger’s side of the vehicle. The safing sensor is located on the passenger’s side. This placement allows the sensor to be more sensitive to a crash impact. Make sure the ignition has been turned off for at least five minutes before moving on to repair anything associated with the airbag system. Accidentally triggering the airbag during repair can result in severe injury or death.

Need help with a B1922 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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
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