P0300 code on 06 Altima 2.5

General discussion area for the L31-chassis Altima, including the 05-06 SE-R models.
accuracy101
Posts: 1
Joined: Sun Apr 09, 2017 4:33 pm

Post

Quick backstory:

About 6 months ago, my 2006 Altima 2.5 started having trouble starting up
- it would turn over fine but it would hesitate and wouldn't fire right away. I
changed the spark plugs and had both the crankshaft and camshaft
sensors replaced but the problem persisted. I ran a companion wire directly
from the terminal to the crankshaft sensor and it's been cranking fine since
(about two weeks ago).

The only problem now is that it sputters and sounds like it wants to die
once it starts. This started around the same time the issue above started
and it only happens after it starts - It never stalls or dies at idle in traffic or
anything.

I got the P0300 code (random / multiple cylinder misfire) about a week ago
and I cleared it. The check engine light just came back on today after a
week. I've also been hearing this odd sound of water sloshing around in the
dashboard area when it first starts up. I've also noticed that I've been losing
water out of my resevoir tank for the past couple of months, too.

I'm really not sure where to start. Has anybody else seen anything similar
to this?


dabey2000
Posts: 1
Joined: Wed Feb 07, 2018 2:56 pm
Car: 2003 Altima 2.5L

Post

Did you ever figure this problem out? My kids bought an 03 and it started doing the same thing. Pulled the spark plugs and #1 had 2” of oil in it. Cleaned it out, replaced the plugs, but still running rough.

amc49
Posts: 1183
Joined: Mon Jun 19, 2017 7:24 pm
Car: '11 Nissan Versa
'17 Nissan Altima

Post

If you still have a double wire each leg of which is reading crank then decide which one you want and cut out the other one. Those wires are often shielded from interference and another one running right next to that is a possible issue. As well, you could be inputting multiple crank sensor logic pulses, one for each wire and even worse if the jumper is not the same length. The ECM may have fits with that trying to figure out which set of signals is the real one.

(EDIT) just saw the OP date yet left this in place as it still could be of some use to someone.


Return to “3rd Generation Altima Sedan (2002-2006)”