B1909 LEXUS, SCION, TOYOTA: SHORT IN FRONT DRIVER SIDE PRETENSIONER SQUIB CIRCUIT
POST UPDATED IN June, 2023
B1909 LEXUS, SCION, TOYOTA: SHORT IN FRONT DRIVER SIDE PRETENSIONER SQUIB CIRCUIT
The front driver’s side pretensioner ignition circuit is composed of two elements: the center airbag sensor assembly and also the front seat left outside (LH) belt. The function of this circuit is to command the Supplemental Restraint System (SRS) to deploy when conditions warrant.
When the B1909 OBD2 fault code is stored on Lexus, Scion, Toyota vehicles, it means that a malfunction was detected in the driver’s side front pretensioner activation circuit. Specifically, the code indicates that the circuit is shorted.
The B1909 OBDII diagnostic code is set for the following reasons:
To troubleshoot DTC B1909 OBD2, try this: