Question

I got the code B0101 Open in D Squib Circuit, what does it mean on my 2001 Toyota Corolla?

Answer 1

The B0101 code indicates Open In 'D' Squib Circuit (Driver Side Airbag or Steering Wheel Airbag). You could have a faulty Driver Side Airbag or Spiral Cable (Clock Wire or Clockspring). Replacing the  Driver Side Airbag or Spiral Calbe is necessary to repair the problem. Here is a link to the code page with more information.

B0101 Toyota Code - Open In D Squib Circuit
Read more: https://www.autocodes.com/b0101_toyota.html

Answer 2

This is an airbag code indicating an open circuit. Did your airbag light come on now or in the past (and then go out)? I just googled the code and an open clockspring (spiral cable) or airbag could cause this. Of course there are other possible causes too.  If you don't have experience dealing with airbag repairs, take it to a shop!