B1366 Code: Meaning, Causes, and Symptoms | OBD2 Codes
B1366 – Front-Passenger Seat Belt Pretensioner Open
B1366 Possible Symptoms
Air Bag Warning Light ON
B1366 Possible Causes
Faulty Front-Passenger Seat Belt Pretensioner,Front-Passenger Seat Belt Pretensioner harness is open or shorted,Front-Passenger Seat Belt Pretensioner circuit poor electrical connection,Faulty Supplemental Restraint System Control Module (SRSCM)
The Seat Belt Pretensioners (BPT) are located at both sides of the center pillar. The Seat Belt Pretensioner tightens seat belt before air bag deploys to protect the passenger from bumping against crush pad, steering wheel, and front window. In the Seat Belt Pretensioner, there are an ignition circuit and cylinder for rewinding belt. Gas chamber generates an expansive force of gases to push the piston in the cylinder to lock the seat belt. The Seat Belt Pretensioners circuit consists of the Supplemental Restraint System Control Module (SRSCM) and two Seat Belt Pretensioners. The SRSCM sets the Diagnostic Trouble Code (DTC) if it detects that the resistance of BPT squib is too high or low.