[Lynxis]

I just got a P000C code while driving around at lunch time. I noticed yesterday and on the way to work today that the idle was bouncing a lot. At lunch, the car made a lot more noise than usual when I turned it on.

this is just my initial post to chronicle my issue. The reason I'm bothering with this is because my car is now out of warranty at just a month over 5 years old.

Possibly relevant information:

It is pretty cold now, -15c here today. Temperature dropped like a stone last week. Car is now taking a lot of effort to start in the morning but this isn't really unusual although I recall in previous years it wasn't so bad. Still starts quickly but cranking action is really slow. I also noticed yesterday and this morning constant rpm hunting at idle when warm between 600 and 800rpm.

Oil was changed late October for factory fill 0w20. No oil light and oil was clean and level was good when I checked it maybe 2 weeks ago. I'll check this again later to see if there is any change.

Possibly relevant, I had taken the car to Subaru for a P000A code back in 2015. They swapped sensors, cleared the code and it hasn't come back till now. I wonder if the sensor at position A was swapped to position C so I called Subaru but that wasn't clear in Subarus notes.

Next step, I'm going to clear the code, turn off all electronics and let the car idle for 5-10 minutes before I go home tonight and see if the code returns in the next few days.