Strange Transmission Lock Error, Car Starts

I've read around the forums stating the P Lock error is common from a low battery causing the vehicle not to start.

The strange thing is that my vehicle DOES start and the message appears and the dash shows READY and I am able to enter gear and drive. If I hit a button on the console the message goes away and if I'm driving at higher speeds the message does not return but the large triangle stays. The error message only reappears when I slow down to 3 mph.

The error does flash back on the screen when I slow down to stop or sit at a light. The car does not shut off during this it just flashes the message and shows the large triangle.

My battery test shows 12.3v on no load and 11.6 on a load. I would hate to replace my battery and have the issue not be resolved.

EDIT: Replaced 12v Battery and it has not solved the issue. Did an oil change and transaxle fluid change as well. All fluids appear to be full.

 

while the car is running the voltage is at 14.6, shouldn't the error go away with that kind of voltage?

 

Replaced my battery in hopes that was the cause But the warning light and the message on the screen still remain. The car still drives perfectly fine except the message pops back up on the screen when I come to a near stop. Is there a fuse or relay that could be causing this? Or any plugs that I should check?

 

Yup, checked it. it's secured pretty tightly

 

The hybrid battery holds the charge very well and I'm still getting 40-45 mpg and it doesn't show any codes. I've used the code scanner from the auto parts store and it comes back as no codes found. I hit clear and it it says codes cleared but nothing changes.

220k

 

I'll go back again tomorrow to see if I can pull a code with my new battery installed. Does anyone know if there's a plug or harness or a fuse that I should look for? I'm planning on doing an oilchange next week on both the motor and the transaxle.

 

All doors appear to be closed. The dash doesn't show any lights on either.

I opened and closed all the doors and the dash shows when a door is open.

 

Any suggestions from anyone? Found a couple people post that they had the same issue but have not posted if they have found a solution. They don't appear to be active on the forums. PMs have been sent.

 

No there aren't any other warning lights or engine lights. Should I buy a mini vci and scan it? I've used a obdii scanner and got nothing.