B1801 LEXUS, SCION, TOYOTA: OPEN IN DRIVER'S SIDE SQUIB CIRCUIT
POST UPDATED IN June, 2023
B1801 LEXUS, SCION, TOYOTA: OPEN IN DRIVER'S SIDE SQUIB CIRCUIT
The driver’s side squib circuit is composed of the center airbag sensor assembly, the coiled cable, and the steering pad. This circuit is responsible for providing signals to the SRS (Supplemental Restraint System) to perform deployment once some conditions are met.
DTC B1801 OBDII code for Lexus, Scion, and Toyota vehicles is related to a malfunction of the driver’s side squib circuit, specifically indicating that the error is due to an open circuit.
The B1801 OBD2 fault code is set for one of these reasons:
To troubleshoot the B1801 OBDII diagnostic code, you can do this: