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B1935 is a diagnostic trouble code (DTC) for "Air Bag Passenger Inflator Circuit Resistance Low 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.
The B1935 code is manufacturer-specific body code related to air bags. In this case, it means that the engine control module (ECM) has detected a fault with the passenger air bag inflator showing a low circuit resistance.
A code B1935 will be stored when the ECM has received a voltage signal lower than preset variance thresholds.
The air bag diagnostic monitor and air bag connector utilize metal spring clips, which act as shorting bars and are built into the plastic, hardshell connectors. When the ignition switch is in the “on” position, the air bag diagnostic monitor will run checks on the resistance of the driver and passenger air bag circuits.
If the passenger air bag circuit sends a low voltage signal to the air bag diagnostic monitor, the monitor will report an error or fault to the ECM and a B1935 code may be stored.
Several problems may cause a B1935 code including:
Symptoms of a B1935 code may include:
A mechanic may use several methods to diagnose a B1935 trouble code, including:
A common mistake when diagnosing the B1935 code is to assume the module is damaged or defective, when the problem could be open or shorted circuits. It is recommended to repair or replace damaged or defective wiring and rescan your system before proceeding with more involved repairs.
Because a vehicle’s safe driving operation most likely will be impacted due to faults that store a B1935 code, this code is considered a potentially serious code. When this code appears, it is recommended to immediately take your vehicle to your local service center or mechanic for repair and diagnosis.
Several repairs can fix a B1935 trouble code and include:
Anything related to air bag repairs can be both difficult and dangerous, and is often best left to professionals for diagnosis and repair. If making any repairs at home, take care with the air bags when removed from the vehicle and be sure to use extreme caution when reinstalling spacers to ensure correct installation.
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.