What Does B1930 Mean?
This code indicates the airbag control module has detected a short to ground in the safing sensor output circuit. The safing sensor is a redundant safety component that confirms crash deceleration before airbag deployment, and the module has detected abnormally low voltage on its signal wire. This diagnostic trouble code disables the airbag system to prevent inadvertent deployment or deployment failure.
Safety Warning
The vehicle is unsafe to drive as the airbag system is disabled and will not deploy in a collision, leaving occupants unprotected. The airbag warning light will be illuminated and the vehicle should not be driven until repaired due to the complete loss of supplemental restraint protection.
Common Causes
45%
Damaged or chafed wiring in the safing sensor harness causing the signal wire to contact vehicle ground
30%
Failed safing sensor with internal short to ground circuit failure
15%
Corroded or damaged connector at safing sensor allowing moisture intrusion and ground path formation
10%
Airbag control module internal circuit failure creating false short-to-ground detection
Diagnostic Steps
1
Step 1: Visually inspect the safing sensor location (typically near the airbag control module or center tunnel area) for physical damage, water intrusion, or obvious wiring damage. Check for previous collision repairs that may have damaged sensor mounting or wiring.
2
Step 2: Disconnect the safing sensor connector and inspect terminals for corrosion, bent pins, or contamination. Using a digital multimeter, measure resistance from the sensor signal pin to chassis ground with sensor disconnected - should read infinite/OL resistance (open circuit).
3
Step 3: Backprobe the safing sensor connector at the airbag control module side with sensor disconnected. Measure resistance from the signal wire terminal to ground - should read infinite resistance. If less than 10k ohms, trace wiring harness for short to ground.
4
Step 4: If wiring tests good, reconnect sensor and measure voltage at sensor connector with ignition on - typically should see 5V reference voltage. If voltage is present and correct, replace safing sensor.
5
Step 5: After repairs, clear codes and perform airbag system self-test. Verify airbag warning light operates normally (illuminates with key on, then extinguishes). Monitor for code recurrence through several drive cycles including various road conditions.
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
This code indicates the airbag control module has detected a short to ground in the safing sensor output circuit. The safing sensor is a redundant safety component that confirms crash deceleration before airbag deployment, and the module has detected abnormally low voltage on its signal wire. This d...
The most common cause of B1930 (Air Bag Safing Sensor Output Circuit Short To Ground) is: Damaged or chafed wiring in the safing sensor harness causing the signal wire to contact vehicle ground
Typical repair costs for B1930 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle is unsafe to drive as the airbag system is disabled and will not deploy in a collision, leaving occupants unprotected. The airbag warning light will be illuminated and the vehicle should not be driven until repaired due to the complete loss of supplemental restraint protection.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1930 to identify the root cause.
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Quick Info
Category
Body
System
Supplemental Restraint System (SRS/Airbag)
Difficulty
Type
Manufacturer
Recommended Tools
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