Intermittent high rev condition. First gear feeling. (fixes by resetting car)

try monitoring the 12v. maybe there's a wiring or inverter issue

 

The car is detecting the problems with the traction battery (the P0A80 code from the battery ECU, reflecting the finer detail codes P3012 and P3013 that indicate which blocks of the battery have become weak; and the P3000 code in the hybrid control ECU, simply echoing that it got the P0A80 news from the battery ECU).

As soon as it realizes the battery is on its way out, it greatly reduces the power demanded from the battery, and revs up the engine to make up the difference. That's the high rev/first gear feeling you notice.

After being "reset", it may go back to thrashing the dying battery for a while, until it re-detects the problem.

The engine has some oxygen sensor or wiring issues, but those can be taken care of later.

There may be an issue involving the DC/DC converter (P0A08) but I might be inclined to get the failing battery situation dealt with first, and then see if that converter code returns.

 

Bike stated above with the traction control battery seeing problems or the ECU seeing problems You're going to have to address that traction control battery My car would rather than to the Oblivion too as its battery was starting to fail I could floor the gas pedal and I could hear the revs go up in the car not move much just like a bad clutch in the old days was kind of funny as soon as that traction control battery was dealt with now I can't really make that revving thing happen anymore because the traction control battery is got the power to keep MG whichever one locked up or close to it that's the way I see it.