Hello...Ok not beng a mechanic I will try to explain the best I can.

What is your question?

We have a 2003 Accord EX 4 Cyl...two days ago the car started fine, yesterday when we tried to start it you could hear the engine trying to start but it wont. Today a friend came and he said he could hear the fuel pump and also checked the codes and no codes at all (battery is fully charged by the way). The last thing he tried was to see if it was the sensor...to test it he took all 4 covers of the spark plugs and put screw drivers inside them....asked somebody else to try to start the car and he said that this should have caused sparks on the screw drivers when they touched ground. He said even though there is no code he believes is the crank shaft sensor...he called me back because he found out my car has a chain and not a timing belt therefore it has a cam sensor and not a crank sensor....he has never done this type of work...is everything that i just said makes sense?...is there a link to find out where is this sensor located and how much work this takes? Thanks guys.