You can do an internet search on diagnostic code P1797. You will find information that indicates there is a malfunction with the Park / Neutral switch. On the 62TE automatic transaxle in your vehicle there is no Park / Neutral safety switch. There is a transmission range sensor that sends binary signals / ON, OFF to the PCM (powertrain control module). A rationality check is performed on the transmission range sensor signals and that is how the logic knows which range / gear the transmission is currently operating.. . . . The only code I am getting is the P1797. Please advise as to where this switch is and how can I replace it. I have searched out this switch online but have failed to find that this switch is actually even used on my 2011 Dodge Grand Caravan. . . .
However I did a review in a Chilton service manual for 2011 Dodge Grand Caravan and it indicates that code P1797 is associated with manual shift overheating in the transmission. So this is confusing. Maybe others can specifically identify the condition related to code P1797.