What Does B1922 Mean?
This code indicates the airbag control module has detected that the safing sensor output circuit is experiencing a short to battery voltage (12V+). The safing sensor is a secondary crash sensor that must agree with primary sensors before airbag deployment occurs. The airbag control module detected voltage on this circuit when it should be at a lower reference voltage or ground, indicating unwanted battery voltage present in the safing sensor output signal wire.
Safety Warning
This is a critical safety issue - the airbag system is likely disabled and airbags will not deploy in a collision, leaving occupants without supplemental restraint protection. Vehicle should not be driven until repaired as this eliminates a primary safety system designed to prevent serious injury or death in crashes.
Common Causes
45%
Damaged or chafed wiring harness causing short to power in safing sensor circuit
30%
Faulty airbag safing sensor with internal short to voltage
15%
Corroded or damaged connector at safing sensor causing cross-circuit short
10%
Airbag control module internal fault causing false short detection
Diagnostic Steps
1
Step 1: Perform visual inspection of safing sensor location (typically in center console or near transmission tunnel) for physical damage, water intrusion, or obvious harness damage. Document sensor connector condition and check for corrosion, pushed-out pins, or melted terminals.
2
Step 2: Disconnect the safing sensor connector and measure resistance between the signal output wire (consult wiring diagram for specific pin) and battery positive using a digital multimeter. Reading should be infinite ohms (open circuit); any continuity indicates a short to power in the harness.
3
Step 3: With sensor disconnected, check voltage on the signal output wire at the harness side connector with ignition on. Should read 0-0.5V; if battery voltage (12V+) is present, trace wiring from sensor to airbag module for chafing points against metal, especially where harness passes through firewall or center console mounting points.
4
Step 4: If harness tests good, measure resistance across safing sensor terminals per manufacturer specifications (typically 1-5 ohms for accelerometer type). Also check for shorts between sensor terminals and sensor case/ground. Replace sensor if out of specification.
5
Step 5: Clear codes and perform test drive or trigger simulation test using advanced scan tool functions. Monitor safing sensor live data for proper voltage response. If code returns immediately without circuit issues, suspect airbag control module internal fault.
6
Step 6: After repairs, perform complete airbag system self-test and verify all airbag warning lights function properly. Document all repairs and ensure no other airbag codes are present before returning vehicle to service.
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
This code indicates the airbag control module has detected that the safing sensor output circuit is experiencing a short to battery voltage (12V+). The safing sensor is a secondary crash sensor that must agree with primary sensors before airbag deployment occurs. The airbag control module detected v...
The most common cause of B1922 (Air Bag Safing Sensor Output Circuit Short To Battery) is: Damaged or chafed wiring harness causing short to power in safing sensor circuit
Typical repair costs for B1922 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This is a critical safety issue - the airbag system is likely disabled and airbags will not deploy in a collision, leaving occupants without supplemental restraint protection. Vehicle should not be driven until repaired as this eliminates a primary safety system designed to prevent serious injury or death in crashes.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1922 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Body
System
Supplemental Restraint System (SRS/Airbag)
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
