Where did you get the crank sensor, if you bought one from 'ye olde parts hause like Autozone, O'reilly, etc then that's likely the problem. The aftermarket sensors for the most part suck badly and the ECU doesn't like them, stick to the OEM Nissan sensors. The issue might also be the harness or the wiring, possibly the grounding system is corroded, etc.

If the motor is turning over slowly that is probably a failing battery, electrical corrosion, or a bad starter. The CKP will not affect starter torque, it should crank STRONGLY.

Ignition START, ECU looks for CKP and CAM signal (no data, just verifying they exist), if found it will turn the fuel pump on AND close the start relay, also looks for CAM sensor DATA during rotation and will fire coil packs and open injectors based on cam position.

 

 

Def check the battery connections. For the longest time my ground terminal barely made a good connection despite tightening the **** out of it. Ive had multiple problems trying to start it because of that, but once I replaced the terminal on the wire, It hasn't given me a problem since.

 

Often times members ignore advice given to them leading to more frustration and head banging because they can't fix their issues. The SES light is there for a reason and it usually tells you what's wrong with your car. Start with the simplest answer here and go buy a Nissan sensor, install it and sit back to enjoy the results of your logical thinking. More than likely the new sensor will solve your issue and you won't have to do anything else. Or don't and keep up the, your choice.

 

 

I'll reserve final judgement until you have all new NISSAN sensors installed, not ones from NAPA or anywhere else that say OEM but aren't. More than likely they label those parts OEM style or replacement. You were given a clear answer from the day you posted your thread in the second post that same day, 7/2, and here we are 26 days later still with no resolution yet. In your opening post you also mentioned searching for a solution and you used "couldn't get a clear answer" for the first time and now here it is again. If you had read more than one other thread about p0335 you would have found someone who said only use Nissan sensors so methinks you need to hone your search skills lol. Just be careful you don't use it as an excuse over and over. I get that you're frustrated, I get that way as well when I have a problem I can't figure out on my own but this forum is full of a lot of us that have been doing this for a long time and know what we're talking about.

If the Nissan sensors don't work, cleric posted numerous other possibilities that might lead to your issue but I'm willing to bet that the crank sensor works. Good luck.....

 

The OP thinks only a nineteen year old vehicle needs love?
Is he living in a dream world?
Using non OEM parts just complicates troubleshooting. He never mentions the condition of the battery or his entire electrical system, cables, any corrosion, alternator output, coil packs, wires, etc
If he installed a non OEM fuel pump that would be a good place to start. He never mentioned testing fuel pump pressure.
I suppose he'll still be banging his head against a wall in another 26 days?
OP perhaps you should obtain a FSM for your vehicle and follow the troubleshooting steps.

Telcoman