does the 2006 Honda ridgeline have an ignition key with a computer chip in it?

Some places that make keys have a programmer to be able to reprogram a new key and some places do not. Do you still have the plastic piece, there is a chip in it. Check with the people that cut keys to see if they are able to program before buying the new key.

It certainly could cause it not to start. If you have the end of the key hold on to the ignition key while turning the vehicle may start then. There is piece behind the key slot that picks up the key code and then allows the vehicle to start. If your hold the broken end in place it should read the key code. You can also have the key copied to a writable key blank as well. Then there is no need to reprogram the vehicle