B1937 Air Bag Passenger Pressure Switch Circuit Open Fault

• Code: B1937
• Description: Air Bag Passenger Pressure Switch Circuit Open Fault
• Definition: This code indicates that there is an open circuit in the passenger airbag pressure switch, which may prevent the airbag from deploying correctly in the event of a collision.

b1937 – air bag passenger pressure switch circuit open fault

Typical severity: Medium

Common Causes

b1937 – air bag passenger pressure switch circuit open fault

Common causes:

• Faulty passenger pressure switch
• Open or short circuit in the wiring harness
• Poor electrical connection at the passenger pressure switch
• Defective airbag control module

 

Common Misdiagnosis

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• OBD2 Code: B1937
  
  Description: Air Bag Passenger Pressure Switch Circuit Open Fault
  
  Common Misdiagnosis: Replacing the airbag module or sensor without checking the wiring harness for damage or disconnection.

 

Common Diagnostic Steps

OBD2 Code: B1937

Description: Air Bag Passenger Pressure Switch Circuit Open Fault

• Check the airbag system fuse and replace if necessary.
• Inspect the wiring harness for any signs of damage, such as fraying or corrosion, and repair or replace as needed.
• Examine the passenger pressure switch connector for secure connection and clean contacts if required.
• Test the passenger pressure switch using a multimeter to ensure it is functioning correctly; replace if faulty.
• Use an OBD2 scanner to clear the code and test drive the vehicle to see if the code returns.