Post by
_Wee35_ »
https://forums.nicoclub.com/wee35-u279977.html
Tue Jan 09, 2018 10:47 pm
Hoping I can get some input on a recurring issue for my 2011 Nissan Altima Hybrid, 120k miles. Keeps throwing limp mode and shutting down the engine after I hit about 60 mph.
A while ago, a passenger of mine plugged his laptop into my cigarette lighter. It triggered limp mode after a few minutes. Mechanic reset it,
but it came back a week later any time the car went over 60 MPH.
My new hybrid specialist, who's very thorough, ran diagnostics and said the engine code it's throwing points to a possible transmission failure. The code is P0A94 - DC/DC converter performance/Boost converter. They said it's unrelated to the laptop plugging in (I assume that drew too much current) and it's coincidence that the transmission is likely going out at the same time. I drive passengers and have driven the car harder than most would.
The problem is the subcode won't throw, and they say it's the -127 subcode that definitively points to the transmission as failing. I have a list of all the other subcodes if it would help. The mechanic is not willing to offer their parts/labor warranty on a transmission replacement without throwing getting the subcode to be sure of the issue, but they say in their experience, this is the part that's failing when the parent code is thrown and the ICE shuts down.
After reading the OP, I wonder if it's possibly a fluid level issue, whereby the heat is causing aeration; one of the mechanics from the specialist mentioned overheating. I'd rather not drop the $5,000+ on a new transmission if it's something less serious.
Thoughts?