What Does B1916 Mean?
This code indicates the airbag control module has detected an abnormal voltage condition in the driver's side airbag circuit, specifically that the circuit is shorted to battery voltage rather than operating at its normal low reference voltage. The airbag control module continuously monitors the driver airbag deployment circuit resistance and voltage, and has identified that battery voltage is present where it should not be. This fault will typically disable the airbag system and illuminate the airbag warning light.
Safety Warning
This is a critical safety concern as the driver airbag will NOT deploy in a collision when this fault is present, significantly increasing risk of serious injury or death. Vehicle should not be driven until repairs are completed, and all occupants should be aware the airbag system is disabled.
Common Causes
45%
Damaged or chafed wiring harness under driver's seat or in steering column causing contact with battery voltage
30%
Faulty clockspring assembly with internal short to power circuit
15%
Corroded or damaged connector terminals at driver airbag module causing cross-circuit short
10%
Defective airbag control module with internal short circuit
Diagnostic Steps
1
Step 1: Perform visual inspection of all wiring from the driver airbag module through the clockspring and down to the airbag control module, looking for chafed, pinched, or damaged insulation, particularly under the driver's seat and at the steering column. Check for any signs of previous repairs or modifications.
2
Step 2: Disconnect the driver airbag module connector (following proper airbag safety procedures and waiting recommended time after battery disconnect). Using a digital multimeter, measure resistance between both airbag circuit pins and battery positive; reading should be infinite ohms (open circuit). Any continuity indicates a short to battery voltage.
3
Step 3: If Step 2 shows a short, disconnect the clockspring connector and repeat resistance measurement. If short disappears, clockspring is faulty. If short persists, inspect and test wiring harness between clockspring and airbag control module for damage or pinch points.
4
Step 4: If no short to battery is found in wiring, reconnect all components and use advanced scan tool to monitor live airbag circuit voltage data while manipulating steering wheel and moving driver's seat. Voltage spikes or abnormal readings indicate intermittent wiring issue or clockspring fault.
5
Step 5: If all wiring and clockspring test normal, suspect airbag control module internal fault. Verify proper ground connections at module and check module connector for corrosion or bent pins before replacing module.
6
Step 6: After repairs, clear codes, perform airbag system self-test using scan tool, and verify airbag warning light operates normally (illuminates at key-on then extinguishes). Road test and verify no code returns.
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
This code indicates the airbag control module has detected an abnormal voltage condition in the driver's side airbag circuit, specifically that the circuit is shorted to battery voltage rather than operating at its normal low reference voltage. The airbag control module continuously monitors the dri...
The most common cause of B1916 (Air Bag Driver Circuit Short To Battery) is: Damaged or chafed wiring harness under driver's seat or in steering column causing contact with battery voltage
Typical repair costs for B1916 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This is a critical safety concern as the driver airbag will NOT deploy in a collision when this fault is present, significantly increasing risk of serious injury or death. Vehicle should not be driven until repairs are completed, and all occupants should be aware the airbag system is disabled.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1916 to identify the root cause.
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Quick Info
Category
Body
System
Supplemental Restraint System (Airbag)
Difficulty
Type
Manufacturer
Recommended Tools
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