Skip the auto shop - Our mechanics make house calls

B1926 OBD-II Trouble Code: Air Bag Passenger Pressure Switch Circuit Failure

diagnostic check engine light

B1926 definition

A B1926 trouble code is related to a vehicle’s air bag pressure switch that will turn the passenger side supplemental restraint system (SRS) off and on depending on whether or not a person is sitting in the passenger seat.

What the B1926 code means

B1926 is a manufacturer specific OBD-II body code for a circuit failure for the passenger-side air bag pressure switch. This consists of a pressure sensor, typically mounted underneath the passenger seat, and wiring to connect the sensor to the air bag diagnostic monitor. When a failure is detected during the system’s start-up test, it will trigger a B1926 and likely disarm the passenger side air bag.

What causes the B1926 code?

The most common causes for a B1926 are:

  • Faulty passenger air bag pressure switch
  • Faulty air bag diagnostic monitor
  • Faulty battery voltage, resistance, or connection
  • Faulty charging system, i.e. faulty alternator

What are the symptoms of the B1926 code?

Symptoms should go unnoticed other than a check engine light and or air bag light on the dash. In the event of an accident, chances are high the passenger air bag will not deploy.

How does a mechanic diagnose the B1926 code?

Using a digital volt meter, your mechanic will test the passenger side air bag pressure sensor before determining it needs to be replaced. While chances are high a new sensor will fix the issue, your mechanic may need to continue testing the air bag diagnostic monitor circuit for any damaged wiring or grounds.

Common mistakes when diagnosing the B1926 code

Some B1926 codes can be caused by intermittent wiring faults instead of the pressure switch itself. This makes simple tests of the air bag circuit cost effective.

How serious is the B1926 code?

If a B1926 is present, chances are high your passenger air bag will be disabled. This makes repairs important to ensure the safety of occupants.

What repairs can fix the B1926 code?

The most common repairs for a B1926 are as follows:

Additional comments for consideration regarding the B1926 code

A B1926 is specific to Ford, Mercury, Lincoln, and Mazda vehicles. Any work that needs to be conducted on a vehicle’s SRS should be handled by a trained professional. The air bag could unexpectedly deploy while working to fix a B1926

Need help with a B1926 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
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222...
How to Buy Fuel Treatments
Adding a fuel additive to your gas tank when you fill up is one way to clean vital engine parts of deposits, improve the performance of your engine,...
Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...


Related questions

Q: p0420

A vehicle with 182,000 miles is likely due for a catalytic converter. Most of the time it does mean you need a new catalytic converter. But there are a couple of other things that are prudent to take a look...

Q: Looking for info about most common OBD2 Codes

There are two (at least) quite distinct issues in regard to your general request: The first is, once a check engine light illuminates, what are the most "frequent" codes that are stored and thence downloaded, that is what does THAT...

Q: My transmission was rebuilt 6mos ago, overdrive light blinking

Hi there. The overdrive light flashing is, the time a fault is recognized by the PCM (Powertrain Control Module) and/or TCM (Transmission Control Module). The fault code for the overdrive problem should store in the computer's memory. This should help...