B1186 Open in the passenger side airbag second stage squib circuit

What does B1186 mean on a Toyota?

B1186. Open in the passenger side airbag second stage squib circuit. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1186

• Open or short in the passenger side airbag second stage squib circuit
• Loose or corroded connector at the passenger side airbag second stage squib
• Damaged harness between the airbag sensor center and the passenger side airbag second stage squib
• Failed passenger side airbag second stage squib
• Faulty airbag sensor assembly center

How to fix B1186

1. Disconnect the battery and wait before touching SRS wiring
2. Confirm the code with an SRS-capable scanner and read freeze frame
3. Inspect and reseat the passenger side airbag second stage squib connector
4. Test the passenger side airbag second stage squib circuit for opens, shorts and resistance
5. Replace the passenger side airbag second stage squib only after the circuit tests fail