Had he engine light come on last night....car started running crappy.
Parked it.
Today, car ran fine...engine light still on.
Later in the day engine light went out.
I had a friend check for a code and found:
P0340 Crank Position Sensor A-Bank 1 circuit malfunction.

So...what's involved in replacing, fixing, or cleaning the "sensor"... ( and where the hell is it? ;-)

Thanks

 

I'd check the wiring first since it's a circuit (generally, wiring) malfunction. The crank sensor is on the front, bottom driver's side of the engine.