Passenger Side
The passenger side airbag system has detected a fault in its readiness or deployment circuit, similar to a safety net with a broken connection. The vehicle's computer can't confirm the airbag will deploy properly in a crash.
The ECU continuously monitors the passenger airbag squib (igniter), wiring harness, and deployment circuit for electrical continuity and proper resistance. It checks if the airbag system can receive a deployment signal and respond within safe parameters. A break in the circuit or resistance outside acceptable range triggers this fault.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Squib Resistance | 1.5-3.5 ohms | Below 1.0 or above 4.0 ohms |
| Circuit Continuity | Continuous signal path | Open circuit detected |
Code B1996 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.
Once the fault is repaired, B1996 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.