Following up on above. Fault code still present after new seat belt catches installed. Mechanic now says ignition switch probably sending low voltage and that needs to be replaced. I questioned him why I bought new seat belt catches if that was not the problem. He reasoned that the time to troublesh...

The seat belt sensor, actually a switch, is built into the seat belt catch, Volvo part # 9191817-7, $75.81 list price. It triggers/arms the srs system. It has the orange release button and is bolted to the inboard side of the seat. Slide seat all the way back and you can use channellocks or unbolt s...

I am in the middle of the same problem with my 2000 S-80 T6. My independant garage scanned it and detected both the driver and passenger seat belts had a "permanent fault" code. Meaning that the switches built into the seat belt catches, part # 9191817-7 (either side of the center console ...