I have a 2017 Nissan Pathfinder with CVT transmission. 64000 miles.
Car began having hard starts about 6 months ago. Recently threw a check engine light and began having an issue with loss of power.
I would floor it from a stop and I would have maybe 30% power. Car almost felt in a safety mode.
Took the car to dealer. Dealer told me engine oil looked a bit sludgy. Told me there were three codes. Two for CAM pos sensor Bank 1.
Also one code for CVT Judder.
I have extended warranty on the vehicle. Was told they would replace transmission but wouldn’t touch motor because I couldn’t prove oil changes to satisfy warranty. Not a fight worth fighting.
Transmission was replaced. Got car back. Still same exact acceleration issues. I changed oil once. Added Seafoam…ran for 60 miles, changed oil again. Added Seafoam again. Two codes still remain:
P0014 and P0017
Here’s where it gets weird…
I have a scan tool. Not a fancy one but does the job. If I clear codes, car runs like a bat out of hell. Runs amazing
Once I turn the vehicle off, then turn back on…same exact issue. Car feels like it’s in a safety mode almost…also has a different “grunt sound” to it. No knock, no tap…just a grunt and the vehicle runs at seemingly 40-50% normal power. NOTICABLE diff in power
If I shut car off, clear codes, fire back up…runs amazing again.
P0017 comes back instantaneously when I clear codes
P0014 takes a moment or two to appear.
I’m looking for any possible guidance on what may be going on. I’m having a hard time believing it’s a lifter or a selenoid for the VVT as the issue disappear as soon as I clear the codes.
Appreciate any insight anyone can offer. I’ll gladly provide more info if needed.