Okay so basically my maxima is throwing all sorts of DTCs for the transmission. I'm not confident if it's a mechanical issue and I'm better of moving on from this car or if its a couple hundred dollar fix with some spare time. The list of codes that are severely affecting the way my car drives are as follows:

P0725 - Engine speed input circuit
P0715 - Input/Turbine shaft speed sensor 'A' circuit
P0826 - Up and Down switch input circuit
P1701 - Power supply circuit
P1723 - CVT speed sensor circuit
P1778 - Step motor circuit malfunction

As you may see there's a common trend here. The word circuit. Now I'll add that out of the blue, after resolving my previous loss of power issue by simply removing the catalytic converter guts, this happened randomly. I was driving then suddenly at 45 mph 1800 RPM my maxima seeming downshifted and rose to 2k-2.3k RPM and sat there for a solid half a minute before returning to its normal cruising state. My cruise control was on at the time but not engaged. The CC light also started flashing and was rendered useless and my paddles and sport mode were not engagable. Cue first 5 codes. Now I got the codes scanned the other day and had seen the dreaded death code P1778. But whats intriguing is the description. It seems more like a P1777 than the actual motor. If anyone can shed some light and tell me what to look for or do I'd greatly appreciate it. Please help.

 

Looks to me that you might have blown a usable link! Google it for your maxima and check it out. Good luck

 

What exactly is a ¨usable link¨? I am unfamiliar with that.

 

He might have meant fusible link, which makes sense as all the thrown codes deal with electrical issues.