What Does B1995 Mean?
This code indicates the airbag control module (ACM/SRS module) has detected abnormally low electrical resistance in the driver's side-mounted airbag squib (initiator) circuit. The squib is the pyrotechnic device that deploys the side airbag during a collision. Low resistance typically means a short circuit in the wiring, connector corrosion creating a short path, or internal failure of the airbag module itself.
Safety Warning
Vehicle should not be driven as the driver side airbag will not deploy in a collision, significantly increasing risk of serious injury. The airbag warning light will remain illuminated, and this is a safety-critical failure requiring immediate professional repair.
Common Causes
35%
Damaged or pinched wiring harness under driver seat causing short to ground
30%
Corroded or moisture-damaged connector at side airbag module creating low resistance path
25%
Failed driver side airbag module with internal squib short circuit
10%
Faulty airbag control module incorrectly reading circuit resistance
Diagnostic Steps
1
Step 1: Disconnect vehicle battery and wait 10 minutes for SRS capacitors to discharge. Use multimeter to measure resistance across driver side airbag squib connector terminals (disconnected from harness) - should read 2-3 ohms typically. Reading near zero ohms confirms internal squib short.
2
Step 2: If squib tests normal, inspect all wiring under driver seat for pinched, chafed, or damaged insulation, especially where harness routes along seat tracks and mounting points. Check for contact with sharp metal edges or seat frame.
3
Step 3: Inspect connector at side airbag module for corrosion, bent pins, moisture intrusion, or signs of previous water damage. Clean terminals with electrical contact cleaner and check female connector terminals for proper tension.
4
Step 4: Measure resistance from airbag harness connector to ground with all connections separated - should read infinite (open circuit). Any measurable resistance indicates short to ground in wiring harness requiring repair or replacement.
5
Step 5: If all wiring and connections test normal, perform bidirectional test of airbag control module (without deploying airbag) using advanced scan tool to verify ACM internal circuitry is functioning correctly. Replace ACM if unable to pass self-test.
6
Step 6: After repairs, reconnect all components, reconnect battery, clear codes, and verify airbag warning light extinguishes after self-test cycle. Perform test drive and verify no code returns.
Estimated Repair Cost
$200 - $1,500
Parts + labor, varies by vehicle and location
This code indicates the airbag control module (ACM/SRS module) has detected abnormally low electrical resistance in the driver's side-mounted airbag squib (initiator) circuit. The squib is the pyrotechnic device that deploys the side airbag during a collision. Low resistance typically means a short ...
The most common cause of B1995 (Driver Sid, Side mount Airbag Low resistance on Squib) is: Damaged or pinched wiring harness under driver seat causing short to ground
Typical repair costs for B1995 range from $200 to $1,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle should not be driven as the driver side airbag will not deploy in a collision, significantly increasing risk of serious injury. The airbag warning light will remain illuminated, and this is a safety-critical failure requiring immediate professional repair.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1995 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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