NH82W123-there's an article in "the Star",Jan-Feb 2014, p70. It covers the crankshaft position sensor. I changed mine as the article said they go bad over time. A way to check is to pour water on the sensor. It cools it and the vehicle may start. It's on the fire wall a little toward the driver. Very hard to get to from underneath but only one bolt (I think) and an electrical connection. It's very difficult to get your hands up there but doable. The article says it sometimes does not show a code. steve