P0340 - 2012 nissan sentra

Interesting! No correlation code, just a circuit code for the cam sensor? And the chain got rid of the circuit code? I'm baffled why the manufacturers pick the wrong code. Why not have a proper correlation code with a stretched chain instead of choosing an electrical code completely unrelated to chain stretch? Or, at least a performance code for the sensor, not a circuit code! I've been telling…

Phil There is a code for correlation, it's P0011. Chains stretch over time, a typical window for coding would roughly be one tooth off. For me, more information is needed before I would go with replacing the chain etc. for the P0340. Here is the code set criteria for the P0340

Cameron- I agree with Jim,I dont think the P0340 is from a stretched chain. My guess is you found a different problem ,while doing your diag. Now the chain is obviously strectch,but me thinks the P0340 is intermittent and will return….

I have p0340‘s on Honda 2.4’s where a new chain fixes it every time. All due to chain stretch. I’ve also had many chains or phasers on the vw/Audi 2.0’s with a p0340 only. I think it can vary from engine to engine to manufacturer In my opinion.

This is a Nissan. Ive never seen that code on a Nissan for a stretched chain. I work on a lot of Nissans. So I have my doubts about this Nissan. Nissan.

I’ll agree with you to a certain extent. While I have personally never experienced a p0340 on a Nissan 2.0 that I can remember ….. my first instinct would be mechanical. The reason being is that every car in the last 10 years with that code has been mechanical. But that’s been my experience. I did a quick search on iATN and have multiple p0340’s on the Nissan 2.0’s. Most for no starts and a…

Jason Part of the problem sorting these out, is that rarely does anyone support their findings with enough information to follow up. I'm not saying stuff is being made up, it's just that there is nothing available to sort it out. It is very easy to confuse diagnostic details and repairs, I've done it myself a number of times. I'm hoping you or someone else would be able to provide more…

Hi guys So I can't disagree with your comments. My approach when I originally diagnosed this car was to compare cam and crank sensors. When I gathered the waveform there were clearly differences between what Nissan publishes for this engine and the one I was working on. On another site I'm a member of I shared my waveform and fortunately someone else had a known good. Again you could see…

Yes absolutely!! Im not saying you're wrong at all, just that it hasn't been my experience. Do let us know if the code returns.

Hi Cameron Understanding that the cam and crank sensors were working, just that the cams and crank were “off” based on what the ECM was expecting, I think it is important here to consider the two fault categories for these signals, circuit codes and correlation codes. The latter test (codes are failures of a test) requires non missing signals etc. Generally speaking, circuit codes are…

audi will also throw cam ckt codes for correlation issues. I've seen this on many other models.

Cameron, You'd be doing us a huge favor if the P0340 code returns to let us know. My goal as an instructor is to not give the impression that diagnosis is a hopeless guessing game. Have a cam code? Check for a correlation problem…. huh? Why would I do that if the OE chart, supplied by Jim, makes absolutely no mention of the stretched chain even being a possibility? I'm not saying they don't…

Jim, Not to play devils advocate but just throwing some stuff out there. I agree that most P001x codes usually have a tolerance of what usualy equals a tooth off but since nissan decided that we're probably to dumb to need that information they didn't put it in SI that I could find. On the code set criteria it has listed as a detecting condition that the cam signal is not in its normal…

Not to play devils advocate but just throwing some stuff out there. Thanks for jumping in. I think it is good to talk about this stuff as so many questions never get asked or pursued. I agree that most P001x codes usually have a tolerance of what usualy equals a tooth off but since nissan decided that we're probably to dumb to need that information they didn't put it in SI that I could…

Jim- I happen to be dealing with a Nissan VVT issue right now(P0021) Interestingly enough, a possible cause listed for this code is a CKP sensor. Now Im thoroughly confused…..

hey again fellas… as the OP on this .. I'm honestly super happy to have started this discussion. I don't do enough Nissans (or timing jobs for that matter) to have the wealth of experience shared here but it's refreshing to hear all the thoughts that have gone thru my head around these codes mentioned by others… “why didn't this code pop vs that code… how come 340 showed up vs 11…” I thank you…

What year, model, and engine?

Jim- I dont wanna muck up this guys thread too much. 2006 Pathfinder 4.0 Its on the backburner for now, (we're crazy slammed)but has been giving me the run around. Im thinking a bad timing gear…..

Rudy Thanks for the additional info. Being a 2006, it likely will fall into a different category. There is a huge amount of research and discussion to be had on this topic and it is a shame that earnest technical discussions have been almost impossible in the current (and past) social spaces. There appears to be three general categories of looking at this topic. - Everything needs to be…

I dont understand the disparagement of scope users these days. It literally takes a few minutes to set up and anylze a signal and move on to the next signal. It's so easy a caveman( me) can do it. I've never met a seasoned scope user who was illogical. Thats counterintuitive to using this particular piece of equipment and practicing comparative analysis…

I dont understand the disparagement of scope users these days. Who is doing that? :-) Let me preface what I've written below with this. It is none of my business what tools a technician wants to use. I don't want to tell anyone what to use, but I do want to encourage others to think about what I would consider working smarter. As you know, working harder, means physical damage that you live…