2017 Nissan Rogue brought to dealer many times...

[Python]

I wonder if someone can advise me on this ongoing issue. I have a 2017.5 Nissan Rogue SV Midnight Edition. It has 12k miles on it. I didn't have any issues until 6/2019 when check engine light came on. It was running a little rough, jittery. I took it to dealership, they told me code read P0172 and it needed a new "Air Fuel Sensor". I had it replaced.

1 year later 5/2/2020 check engine light on again, running rough. They said code read "P0130 A/F Sensor and P0171 Fuel Sys-Lean" and they replaced A/F Sensor.

Couple weeks later 5/21/2020 Check engine light came back on (3rd time), They said it just needed a software re-program. They said P0171, it says on receipt "may have forgotten to clear self learn, drove 10 miles, no codes." They reset software, apparently.

Couple weeks after that 6/4/2020 check engine light on again (4th time), Dealer now said the code P0171 code again, they performed leak tests, they replaced the Mass Air flow sensor (again), performed idle learn and self learn. I asked "so you replaced the part that you replaced already 2 weeks ago" And he said yes, but it was a different part number. He then asks me what type of gas I put in, I told him Chevron Premium. He stated to use 87 octane, premium can cause a check engine light(????) I never heard that one before, manual says "minimum 87".

Now today, I get in the car the check engine light is on again for the 5th time. Obviously the dealer doesn't know how to fix this issue. What should I do at this point?

[RGOLD]

Too many codes, sounds like a problem with connecting wiring. I would go to a different dealer who know how to read the wires diagrams and find the root cause.

[casperfun]

Now come on, it’s new, but not that new, but practically new in my book.

These lean back codes that I have gotten a few times over the years, these exact codes and on bank 2 way later.

But I got these codes way over a half decade or 6,7,8, years later; heck I don’t really remember.

All I did was clean the mass air flow sensor. And later Sprayed seafoam into manifold intake and poured some into gas tank as preventive measures. Don’t know if that latter helped.

Anyways, Got rid of lean code on left bank.
Then few years later got the code again so I cleaned mass air flow sensor and re-tightened my hose connector where I sprayed cleaner earlier and might have gotten loose a bit and created a leak.

Also during this time I was told by dumb dealership that they couldn’t budge the intake connector or whatever cuz it was hard to do and a leak might be there during a pre check inspection.

Total s*** cuz I was able to do it myself. Just think about people who don’t know their way around cars. Dealerships are shady as hell!

Then got lean code on bank 2 a few more years later, so I re-cleaned my mass air flow sensor again and use some top brand fuel cleaners and got rid of THAT code. Even brought my last missing orange bar on my fuel display after missing for 9 YEARS!

Fuel cleaners were a last ditch effort to avoid the stealership!

Point is, I never had to bring my Rogue to my dumb rip-off stealership to fix either lean bank codes. Moreover, it does the idle and learn all its own because I never did that procedure. Just did the cleaning and reset codes and drove.

And I'm still using my original 11 year old mass air flow sensor and it runs smooth.

I did recently had a spark plug misfire code on number 1. Shuddered like crazy, and damn thought my suspension went bad after installing my lift kit. Didn’t get an alignment yet cuz I didn’t get my huge all terrains. Drives great though.

Eventually got a code and I saw a touch of oil on my spark plug; maybe gaskets going bad?

So I changed it with my original old spark plugs I kept because they still looked great when I changed them many years ago.

Reused the old one and now it’s buttery smooth again.

I did get ripped a new one up my yahoo, when I got my front cross arms replaced at the dealership. Yah, I was on crack and stupid at that time last thanksgiving! Gift to my service advisor I guess from me!

[Rogue One]

...He then asks me what type of gas I put in, I told him Chevron Premium. He stated to use 87 octane, premium can cause a check engine light(????) I never heard that one before, manual says "minimum 87"...

The main difference with premium is its octane rating — 91 or higher compared with 87 for regular octane. The higher octane gives premium gas greater resistance to early fuel ignition, which can result in potential damage, sometimes accompanied by audible engine knocking or pinging.

Correct me if I'm wrong, but I think you may have misunderstood the "minimum 87" requirement, as it's a recommendation to not go below that rating. BTW, there is ZERO benefit to using a higher grade octane in this car (well, it does enrich the gas station). The use of higher octane in cars not designed for it has been discussed ad nauseam in this forum and elsewhere. Ditto for the topic of off-brand vs name brand fuel. In short, you can but in the long run it may cause more problems.

If I were so inclined as to spend extra money at the pump, I'd pay extra for the ethanol free stuff.

BTW, unless your car is still under warranty, you are under no obligation to have any dealership do maintenance work on your car. Find a trusted independent repair shop near you and let them check it out.

[PalmerWMD]

Muich sage advice given in this thread.

I once also had a problem with all sorts of codes ( this was years ago.. not sure if it was the same codes but could be)
Dealership thru parts at it and $1000 later it wasnt fixed. This was 10 years ago so thats like 1300 bucks now..

Then they blamed "the modifications" on it (350Z was after market supercharged and ECU flashed)
Turned out it was the MAF all along.

MAFS arent cheap... but if they had replaced with a know good part to check we may have saved the 1300 bucks of other sensors replaced..
But I really have no beef with that dealer..
They repalced a transmission for me that arguable may not have 100% needed it.

The 6 Speed on the early Zs was know to have problemtic sunchros symptom was reluctant engagment of 3rd at times.

I told them 3rd was real notchy...
They could have easily said.. "hey it works tough luck thats not a warrant replacement"..
But they said.. Sure if you want a new transmission we'll put it in.. no muss no fuss... and I wasn't even cruising for a new transmission... the problem wasn't really thaaat bad...

[Python]

The use of higher octane in cars not designed for it has been discussed ad nauseam in this forum and elsewhere. Ditto for the topic of off-brand vs name brand fuel. In short, you can but in the long run it may cause more problems.

If I were so inclined as to spend extra money at the pump, I'd pay extra for the ethanol free stuff.

BTW, unless your car is still under warranty, you are under no obligation to have any dealership do maintenance work on your car. Find a trusted independent repair shop near you and let them check it out.

So, you think my issues are from using Chevron Supreme? I have a shop nearby where I take my older truck to. I thought having another shop do any work would void my Nissan warranty.

[Rogue One]

"I thought having another shop do any work would void my Nissan warranty." Nope. Congress passed a law 45 years ago to protect consumers.

The Magnuson–Moss Warranty Act (P.L. 93-637) is a United States federal law (15 U.S.C. § 2301 et seq.). Enacted in 1975, the federal statute governs warranties on consumer products. The law does not require any product to have a warranty (it may be sold "as is"), but if it does have a warranty, the warranty must comply with this law. The law was created to fix problems as a result of manufacturers using disclaimers on warranties in an unfair or misleading manner.

In short, as long as you have routine maintenance performed and can document it with receipts, the dealership is legally required to honor the warranty. It even applies if you do all the work yourself (oil changes, etc.).

Could your problems be caused by using Chevron Supreme? Well, I wouldn't rule anything out. There is a chance that you've got something else going on that hasn't been discovered, but I'd still stop using premium gas. There's nothing wrong with Chevron gasoline, it's just that your car apparently doesn't like a steady diet of the high test stuff.

[Python]

Thanks for the info Rogue One, appreciate it!

[casperfun]

Maybe it’s just crap gas or their tanks are filthy.

They do have a reputation for it.

https://www.google.com/amp/s/www.ocregi ... water/amp/