My gas pedals wont start, what do i do?

Question

Hi. Guys, I av 2 Toyota corollas 2008 and 2012 I asked my kids to change one battery for the other, because the other battery was down but the terminals were wrongly positioned. Now the gas pedal of the 2008 is not coming up, but the 2012 won't start(just cranks) after it started ealier. Please what do I do?
Was able to scan the 2008 and got these codes p2118, p0102, p0113. But for the 2012, my scanner could not read. Please what do I need to do?

Answer 1

P0102 MAF (mass air flow ) circuit low input

P2118 Throttle actuator control motor current range / performance

P0113 Engine coolant temperature circuit high input

You have one main code that is set, P0102 , you set another code P2118 this would fall under 2 condition, a range problem or a performance problem , Because of P0102  P2118 is set, check the MAF air duct it may have disconnect when the battery was installed, Same with the 2012