Erro code p0335 nissan almera 1.5 petrol

Question edited for clarity.
Question moved to model category.

Reset the security system and engine immobilizer. Connect a code reader scan tool as see what it shows.

https://www.google.com/search?q=2005+Nissan+Almera+reset+security

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NO ENGINE TOLD PETROL OR DIESEL OR SIZED
1.5, 1.6, 1.8L 2.0L
the words "the alternator", means nothing above.
IS REDONE MEAN THE SOUND SYSTEMS?

Did it mean changed it out/ Replaced it? ALTERNATOR>?????
and did so FAILING TO REMOVE THE NEGATIVE BATTERY LUG FIRST, IF YES, YOU BLEW OUT
THE HUGE 120AMP ALT. FUSE./ FOR SURE.

THE BATTERY IS ONLY WEAK BECAUSE THE ALTERNATOR IS DEAD.
1; ALL FUSES GOOD (NO)
2: FAN BELT TIGHT TO ALT.
3: ALL WIRES TO ALT GOOD, 2 SMALL ,ONE TIGHT

NEVER PLAY WITH THIS THIS LUG
BATTERY NEG LUG MUST BE DISCONNECTED FIRST


1.6L PETROL EXAMPLE.
AND when done the bottom connect seated.

You will need to get a Good Mechanic to look at this. There are 3 completely different problems here so it will need to be properly checked out. I've listed the Trouble Code definitions below.
-The knock sensor looks for signs of the fuel igniting at the wrong point in the sequence.
-The Crankshaft position sensor checks the pistons are in the correct position for the engine electronics to be in the correct sequence.
-The Air Control system is a set of valves that adjust air flow through the engine when running at different speeds. (Slow needs less air, fast needs more air).
Knock Sensors and Crankshaft Position Sensors can be in some ridiculous places on an engine and usually need major surgery to get to them. Air control systems could be anything from a 'sticky' valve to a faulty sensor.

P0325 = Knock sensor (KS) 1, bank 1 - circuit malfunction
P0335 = Crankshaft position (CKP) sensor - circuit malfunction
P0505 = Idle Air Control System

look in the engine bay against the firewall to the right under below air filter box to throttle pipe usually cylindrical shape made of metal silver or black in colour

There are hundreds of reasons for the check engine light to come on. Hook up a scanner, read the diagnostic trouble code/ codes and put here to correctly diagnose the problematic area.
Just to pull you out of your problem, my conjecture is that there might be some problem with your throttle body system.
To delete the error codes, simply remove the negative battery terminal for more the 5 Sec and then reconnect.
It should work fine. If the problem persists, contact a qualified service personnel.

run the fault codes and look for cam/crank position sensors.
faulty or loose connections may cause this fault. If you have more than 1 key in the ignition then it has been known that the mass of swinging keys will switch off the ignition
(current recall on all GMC ignition switches for just this reason)

You'll need to find out what code the computer sends to repair the system first. A diagnostic meter will tell you that. Once the system is repaired, the same meter will reset the light.

Note - not a solution..just adding my woes!
I drive a 2003 Nissan Sentra SE-R Spec V.
My car suddenly stalled 1 day and the engine wouldn\'t turn over. Brought it to my mechanic and had the Camshaft position sensor replaced by my mechanic. The car ran fine for about 2 weeks and then the light was back on with the initial symptoms.

Took the car into the dealership and they diagnosed it again as P0335. Said that the mechanic hadn\'t installed the sensor correctly. Charged me a bunch of money to replace the thing and not too long ago the check engine light is on. The Revs bounce around everywhere. Checked the code again and it\'s P0335 yet again! Am in talks with the dealership to get to the bottom of this...

Try a tune up and do a compression test to see if the engine is worn out. You may want to check your air cleaner as well.

The malfunction indicator is not lighting up initially.