What Does B1915 Mean?
This code indicates the airbag control module has detected an electrical fault in the driver's side airbag deployment circuit. The restraint control module continuously monitors resistance and continuity in the airbag squib circuit and has identified an open circuit, short circuit, or resistance value outside acceptable parameters. This fault prevents the driver airbag from deploying properly in a collision event.
Safety Warning
Unsafe to drive as the driver airbag will not deploy in a collision, eliminating critical crash protection. This is an immediate safety concern that requires urgent professional repair before operating the vehicle.
Common Causes
45%
Damaged or corroded clock spring (spiral cable) in steering column
30%
Faulty driver airbag squib or damaged airbag module wiring
15%
Loose, corroded, or damaged connector at airbag module or under driver seat
10%
Failed airbag control module or internal circuit board fault
Diagnostic Steps
1
Step 1: Disconnect battery negative terminal and wait 10 minutes minimum for airbag capacitor discharge. Visually inspect clock spring connector at base of steering column for damage, corrosion, or loose terminals
2
Step 2: Using a digital multimeter, measure resistance across the driver airbag squib circuit at the airbag module connector (should typically read 2-3 ohms). Compare to manufacturer specifications
3
Step 3: Inspect clock spring by removing steering wheel (following proper airbag removal procedures) and check for broken ribbon cable, excessive play, or audible clicking when turning. Measure resistance through clock spring circuit
4
Step 4: Check all airbag system connectors from control module to driver airbag for bent pins, corrosion, or backed-out terminals. Clean and apply dielectric grease if corrosion is present
5
Step 5: If all wiring and connections test good, perform resistance test on airbag control module driver circuit output pins per service manual specifications to verify module functionality
6
Step 6: Clear codes, reconnect battery, perform airbag system self-test, and verify proper airbag warning lamp operation (should illuminate briefly then extinguish at key-on)
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
This code indicates the airbag control module has detected an electrical fault in the driver's side airbag deployment circuit. The restraint control module continuously monitors resistance and continuity in the airbag squib circuit and has identified an open circuit, short circuit, or resistance val...
The most common cause of B1915 (Air Bag Driver Circuit Failure) is: Damaged or corroded clock spring (spiral cable) in steering column
Typical repair costs for B1915 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Unsafe to drive as the driver airbag will not deploy in a collision, eliminating critical crash protection. This is an immediate safety concern that requires urgent professional repair before operating the vehicle.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1915 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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