What Does B1941 Mean?
This code indicates the airbag control module has detected an open circuit in the power supply (feed) or ground (return) circuit for crash sensor #1. The crash sensor is a critical component that detects sudden deceleration during a collision and signals the airbag module to deploy restraints. An open circuit means electrical continuity has been lost, preventing the sensor from communicating properly with the airbag system.
Safety Warning
This is a critical safety concern as the airbag system is disabled or partially disabled with this fault present. The airbag warning light will remain illuminated, and airbags may not deploy properly in a collision. Repair should be performed immediately to restore full occupant protection.
Common Causes
45%
Damaged or corroded wiring harness or connector at crash sensor #1 location
30%
Faulty crash sensor #1 with internal open circuit failure
15%
Poor ground connection or broken ground wire in sensor circuit
10%
Airbag control module internal failure or damaged module connector
Diagnostic Steps
1
Step 1: Locate crash sensor #1 (typically in front bumper area or radiator support) and perform visual inspection of sensor, connector, and wiring harness for physical damage, corrosion, water intrusion, or collision damage
2
Step 2: Disconnect crash sensor #1 connector and inspect terminals for corrosion, bent pins, or pushed-back terminals. Clean and repair connector if needed, then check for proper terminal retention
3
Step 3: Using a digital multimeter, backprobe at the airbag control module connector to measure continuity from module to sensor connector on both feed and return circuits. Expected reading should be less than 5 ohms resistance on each wire
4
Step 4: Measure resistance across crash sensor #1 terminals (sensor disconnected). Compare reading to manufacturer specifications, typically 1-5 ohms. Infinite resistance indicates failed sensor
5
Step 5: Check ground circuit continuity from sensor ground terminal to chassis ground and verify less than 1 ohm resistance. Repair or clean ground connection if resistance is high
6
Step 6: If all wiring and ground circuits test good, substitute crash sensor #1 with known-good unit or new sensor, clear codes, and verify repair by road testing and monitoring for code return
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
This code indicates the airbag control module has detected an open circuit in the power supply (feed) or ground (return) circuit for crash sensor #1. The crash sensor is a critical component that detects sudden deceleration during a collision and signals the airbag module to deploy restraints. An op...
The most common cause of B1941 (Air Bag Crash Sensor #1 Feed/Return Circuit Open) is: Damaged or corroded wiring harness or connector at crash sensor #1 location
Typical repair costs for B1941 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This is a critical safety concern as the airbag system is disabled or partially disabled with this fault present. The airbag warning light will remain illuminated, and airbags may not deploy properly in a collision. Repair should be performed immediately to restore full occupant protection.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B1941 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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