rodent_infested_03

Hello. My 03 Maxima stalled out on the highway and was difficult to start. Limped home. No codes. After some investigation it would appear that both camshaft position sensor connectors are brittle and broken from years of heat. They do not snap as they should they just pop right off without doing anything which I'm guessing is a bad thing. Could explain why I'm getting no code and it's stalling. Tjen fine. I'm replacing the connector with a new one. I'm also replacing the cam sensors and I'd like to know who is the actual manufacturer of OEM camshaft sensors? Thank you

Prophecy99

iTrader: (1)

just get OEM and be done...

after compltely shutting off while driving with no warning or sign of it coming, i wasn't concerned w saving a few dollars.

rodent_infested_03

That's what I'm trying to do. Get real OEM. If I knew who the manufacturer was I could weed out the false claims online

rodent_infested_03

I've been searching and I think OEM is Hitachi and hoping somebody can confirm.

Prophecy99

iTrader: (1)

dealership or dealership stores online will give you OEM

i wanted to guess Hitatchi but yea couldnt conifrm 100% so i didn't post that.

but agian if u got to a dealership online or not u should be able to get OEM without knowing manuf

Child_uv_KoRn

iTrader: (7)

obviously hitachi and a 2 sec google search reveals...hitachi

The sensors fail, b/c oil leaks inside and shorts out the signal.

Tarzan

Oil is used as dielectric. It can't short the sensor. Oil getting in is a downstream of the sensor plastic cracking and tearing coil apart.

rodent_infested_03

Hey thanks. I googled for quite a while before asking. Lots of dead end threads with links to manuals that are deleted. Online sellers claiming OEM, but its not. No clear answer on the updated rear sensor. I tried..

For future reference..

P0345 Bank 1/right/rear: Hitachi P/N CPS0005
P0340 Bank 2/left/front: Hitachi P/N CPS0002 (updated part with metal circular shell)

Child_uv_KoRn

iTrader: (7)

The one with the angled connector doesn't have an updated design. I'm pretty sure the new ones just have the casing made correctly this time.

Child_uv_KoRn

iTrader: (7)

Oil's conductivity increases with temperature, there are a lot of additives in engine oil, plus the grade/type of oil makes a huge difference in conductivity (along with oxidation/contaminants as it ages).

There's a reason why if your car shuts off due to cam sensor and won't restart hot, but it will when it cools off. Or when the plugs get bathed in oil due to leaking tube seals, it may only misfire when hot (high voltage helps a lot).

So, I guess for the cam sensor it would be capacitance that ruins the signal and not a short since it's low voltage (although, I don't know if a partial short can be ruled out, b/c idk how high the conductivity goes with aging/temp).

krismax

iTrader: (15)

oil is very conductive.....

Tarzan

You can ignore oil conductivity in automotive 12V applications. It is conductive in a scientific sense, that yes, oil condition can be tested by measuring its conductivity. But for the purpose of blaming it for shorting coil in a cracked CPS, no, it's non-conductive. By the time oil gets in, the sensor is already a toast.

An analogy for your: when coil packs crack, we observe misfires due to warpage tearing apart coils, even though there is no oil involved.

Prophecy99

iTrader: (1)

nice post ! should help everyone

Child_uv_KoRn

iTrader: (7)

No idea wtf you're talking about with coil packs. I said nothing remotely related to that.

CMax03

iTrader: (3)

How funny... AAD....Lol....Back in the day there was an TSB regarding the Cam and Crank sensors being manufactured with possible defects causing the them to prematurely fail due to corrosion forming on the internal circuit's solder joints...the remedy was found and fixed with an updated version of the OEM sensor... So I would highly recommend your purchase them from a Nissan Dealer online (Tri-Cities, Courtesy, ABC Nissan). These are wholesale prices.....

Prophecy99

iTrader: (1)

yes ! and man its scary having a car turn off 100% with no warming whatsoever while driving

Tarzan

Coil packs crack just like CPS do, and fail once cracked absent any engine oil. And it's Okay that you did not say anything about them - I had to, as you did not understand the common root cause and its effect on both.

rodent_infested_03

New connector and sensor. Does that look correct?

CMax03

iTrader: (3)

Looks really big! Lol...Honestly my sensor's OEM oring looked skinner than that! Matter of fact I was prepared for it to leak and it never did! Just lube it up with motor oil or vaseline so when you slide it in, so it doesn't get damaged!