What Does B1914 Mean?
This code indicates the airbag control module has detected a short to ground condition in the circuit(s) for crash sensor #1 and/or crash sensor #2. These sensors monitor deceleration forces during a collision to determine if airbag deployment is necessary. The control module has identified that one or both sensor circuits are grounded when they should maintain proper voltage, which compromises the airbag system's ability to detect crashes accurately.
Safety Warning
Do not drive the vehicle until repaired. The airbag system is compromised and may not deploy in a collision, or could deploy unexpectedly. The airbag warning light will be illuminated indicating the system is disabled.
Common Causes
45%
Damaged wiring harness or chafed wires in crash sensor circuits causing short to ground, often from underbody damage or collision repair
30%
Failed front impact crash sensor with internal short to ground
15%
Corroded or moisture-damaged crash sensor connector causing short circuit
10%
Airbag control module internal fault incorrectly detecting short to ground condition
Diagnostic Steps
1
Step 1: Perform visual inspection of both crash sensors (typically located in front bumper area or radiator support) and their wiring harnesses for physical damage, corrosion, water intrusion, or signs of previous collision damage
2
Step 2: Disconnect the airbag control module connector and use a digital multimeter to measure resistance between each crash sensor signal wire and ground - should read open circuit (infinite resistance), not zero ohms which indicates short to ground
3
Step 3: Disconnect crash sensor connectors one at a time and check for corrosion, pushed-back pins, or moisture; measure resistance of sensor signal wire to ground with sensor disconnected - if short disappears, sensor is faulty; if short remains, wiring harness is faulty
4
Step 4: Inspect wiring routing along frame rails and through wheel wells for pinch points, abrasion against metal surfaces, or damage from road debris using hands-on trace of entire harness length
5
Step 5: If all wiring and sensors test properly, perform voltage reference test at airbag module connector to verify module is providing proper 5V reference to sensors and not creating false short detection
6
Step 6: After repair, clear codes, perform airbag system self-test procedure, and verify airbag warning light extinguishes and no codes return
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 condition in the circuit(s) for crash sensor #1 and/or crash sensor #2. These sensors monitor deceleration forces during a collision to determine if airbag deployment is necessary. The control module has identified that one...
The most common cause of B1914 (Air Bag Crash Sensors #1 / #2 Circuit Short To Ground) is: Damaged wiring harness or chafed wires in crash sensor circuits causing short to ground, often from underbody damage or collision repair
Typical repair costs for B1914 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Do not drive the vehicle until repaired. The airbag system is compromised and may not deploy in a collision, or could deploy unexpectedly. The airbag warning light will be illuminated indicating the 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 B1914 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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