Hello DF, A few months ago on my 2012 Grand Caravan w/ 145K miles, I received a P0198 "Engine Oil Temp Sensor 'A' Circuit High." So, I replaced the plastic oil cooler with an Amazon aluminum one, but used an OEM oil pressure sensor. Here's the unit:

Then, yesterday, three moths later, I received a P06DD "Engine Oil Pressure Control Circuit Performance/Stuck Off." A few questions:1. In the first code, is "High" referring to the actual oil temperature or the circuit voltage? 2. What sensor is in my picture that's labeled "Temp Sensor?" Is that for oil or coolant? 3. What do you think all of this means? A new oil pump? I bought this van in 2012 brand new and have mainly used Non-high mileage synthetic oil and change it every 3K. Van runs fine. Coolant & gauges act normal. I would highly appreciate any time you invest in trying to help me. Thank you.