Biggerdaddy

Hi,
I had a code PO34, come up on my 2005 350z, that is bone stock. I took it to O'Reilys and the code came back as a camshaft position (bank 2) sensor as a possible cause. So I replaced it. That was fun...I re-set the code via instructions on YouTube, both by discoing the battery and doing the "pedal dance". It did reset it,but only for a little bit. When I turned the engine off and turned it back on, the "service engine soon" and other lights (slip, etc) came on.
Do I need to get the code reset at the dealer?
Could this be due to a weak battery?
Any input is appreciated.
Mke

dkmura

iTrader: (64)

This code is not likely due to a weak battery. I'd suspect a defective CPS unit, particularly if it's an aftermarket piece. This problem has been encountered before and here's one example you can find with a search:

https://my350z.com/forum/maintenance...ht-all-on.html

Biggerdaddy

Thanks for the info, but my car is completely stock, no aftermarket accessories at all.
Does anyone know if it will damage the engine if I keep driving it, with this code, until I figure out what it is?
Do I need to reset it everytime I start it to clear out the code or can I just drive it with the "Service engine light" on?
Thanks for any input.

dkmura

iTrader: (64)

This particular code will eventually result in a stalled engine. Resetting the diagnostic system is only forestalling this eventuality.

Biggerdaddy

Thanks for the input.
As I mentioned previously, I replaced the Camshaft sensor on Bank 2, and now my understanding is that I need to clear this code, in order to finish the job.
Does anyone know how to clear a code the right way? I've checked out YouTube, turned the ignition on, waited 3 seconds, pushed down the gas pedal five times, etc...but that didn't work.
I also disconnected the negative cable to the battery, and pressed the accelerator. It clears the code until I turn off my car. When I restart it, the code is back on..
Does anyone know of someone with a code scanner, so I can clear my code?
I called the dealer, they want $150!
Thanks!

dkmura

iTrader: (64)

Sure- stop by Colorado and I'll hook you up! Also, clearing a code and having it pop back up means the fault is still being detected. That's why I stated that you may have a defective replacement CPS unit.

Biggerdaddy

Lol ok....
When you mention, CPS unit, are you referring to a Camshaft Position Sensor?
If so, I already replaced that, are you suggesting the new unit is defective?

travlee

iTrader: (8)

I am a firm believer in replacing sensors with oem.....

Biggerdaddy

Roger that, thanks!

Atreyu'z 350

Yeah, just buy one of these on EBay or go to Advance Auto tell them what you did and ask them to clear the code for you. https://www.ebay.com/itm/Autel-MaxiS...MAAOSwjg1ZjQvk


...and get OEM.

Biggerdaddy

Okay I'll check that out.
Thanks for the Info!

Biggerdaddy

Well....
After replacing my CPS sensor twice, once with a "cheapo" Standard unit and then next with an OM Hitachi unit that cost more than $90, I am stuck with the same issue. The "service engine" lights keep coming back on.
I called a local mechanic and he said that in many instances, it's not the sensor unit itself, but dirty oil. I was due for an oil change anyway, so I changed my oil, to a 5w-10w, full synthetic, if anybody cares.
I then took it down to the same mechanic, and he cleared the code with his reader for me.
It drove home fine. I turned it off, waited a bit and then turned it back on, the lights were back on. Ahrgggg...
It seems as if no matter what I do, I can't clear this thing.
I even jumped it with my strong truck battery and checked it with my ohmmeter, it read something like 13 volts, so that's not it.
I called the dealer, they want a "mere" $150 to diagnose it and then they will go from there. I can hear their cash register ringing now...
Any suggestions short of taking out a 2nd mortgage to get this thing fixed?
Any help would be appreciated.
I've searched Youtube, most guys said replace the sensor, which I did of course.
BTW it's a completely stock vehicle, no add-ons whatsoever.
Thanks!

dkmura

iTrader: (64)

I'd say it's time to pay the $150 diagnostic fee and let a pro wrench work on it. BTW- compare service prices with Porsche or BMW and then you'll see when a second mortgage is REALLY needed for a car repair! I suspect once you get the solution, the maintenance costs will drop back to nearly zero...

Biggerdaddy

You are probably right, time to pay the piper....
My friend has a BMW, I know my costs should be lower.
Thanks for the input!