Hey all, i live in northern Canada where the weather gets to -40c... Yesterday and today the vehicle did not start mor did any lights turn on. We have replaced the battery but it still does not turn over. Before this, the engine light was on. Previously i was told it was an O2 sensor but i did not get it fixed. What could be wrong with the vehicle?

 

You probably need a starter, not an uncommon problem...
Any tech can diagnose it with a test light.
If you have power at the sarter motor and power
when cranking at the 50 power (starter soenoid wire) youll need to replace the starter.
-40deg c brrrrr. you might want to keep a charger on the battery and put a block heater on it. You might want to keep up with recommended repairs and maint.
and while you're at it make sure your cooant protection is good to past that

Cheers