Replaced crankshaft sensor. Now car wont start. 01 honda civic

SOURCE: i have a 2002 honda

Does this help?

http://www.myacrobatpdf.com/8355/honda-service-bulletin-2002-civic-3-door-and-cr-v-mil-comes-on-with-dtc-p0341.html

I have heard that the same error code on other brands can result from misfiring due to failing sparkplugs.

SOURCE: car wont start

I noticed you replace the crankshaft sensor, but not the CAMshaft sensor.
The Ignition module takes the input of both sensors to tell the coil when to energize.
This sensor should come up as an error code when you attach a obd reader.
Even if your light is not on - there may be a code. If it is not your vehicle originally, some people pull the bulb!

SOURCE: Replaced crankshaft sensor, car still won't start

A camshaft sensor can cause a no start situation, so can a bad coil, or ignition control modual. You need further testing done.
A speed sensor does not cause a no start, that I'm aware of.

SOURCE: Replace crankshaft position sensor

Remove the left front wheel....(drivers side). Remove all accessory belts. Remove the crankshaft shaft pulley.......remove the plastic lower timing belt cover.....and there it is! It is mounted with one bolt.
The wiring runs down the right side of the timing cover while looking at it from the drivers side of the car.

Testimonial: "I ended up having my mechanic do the work. He did say he had to move all those parts to get to the sensor. "

SOURCE: my honda civic wont start

check your distributor cap and starter fuse