We have a 2012 Wrangler Sahara Unlimited. Drove it - all was ok. Killed it and towed it home (husband pulls oversize loads) . On the way home got his truck and the Jeep washed . Went to drive the Jeep the next day - when I started it the hot oil warning came on and it went into limp mode. Have checked all fluids , etc and nothing works . The hot oil warning & buzzing is still on. He put a code reader on it and got error codes p520, u0101, p522, p301,300,302,305. Any suggestions would be appreciated. We are at our wits end.

 

The backstory is not clear. You "killed it" as in something happened requiring you to tow it home, or you were looking at a vehicle you just bought, test drove it, turned it off and towed it home? The oil-related codes there P0520 and P0522 are going to be a pain as that sensor and cooling unit are located under the intake. You cleared the codes and they come back immediately?

 

Sorry for not being clear. When I said I killed it - I turned it off. We towed it because I rode home with my husband in his truck.

 

Wow that is a variety of codes TCM issues, various miss fires and oil pressure sensors. Since this started after it was washed I wonder if something electrical got wet. I would some CRC cleaner (or something like that) and try to clean/dry the main connectors to the TCM etc. especially where you may have used a pressure washer.

 

Well the U code is a CANBUS related problem with the transmission so would start there as that network is needed for the components to talk to each other. P301 is misfire code and P520 is an oil pressure sensor. Did you get the Jeep "wet"?