I've been browsing the forums for quite a while, but only registered today.
This week my Intercooler Hose burst, which is quite a common issue with these kind of engines (Focus 1.8 TDCi 2009). So I bought a silicone replacement, which is supposed to be much better and replaced it myself... so far no issues.
After the wee drive, I have remembered that I forgot to connect the IAT sensor back... so I thought I can just connect it afterwards - I left the car to rest for about an hour and went back to connect it. After starting it I got an Engine Problem light, so I connected my OBD2 to Torque and it read code P0098 (Intake Air Temperature Sensor 2 Circuit High).
I thought - fair enough - the ECU seems to be confused, it's been running differently for the past week, and now I've installed a new pipe. I have cleared the code using the Torque app, and the error doesn't seem to be coming back. I have also measured the Intake Air Temperature and it's changing, but at a steady rate: 29-30C at idle and going down to 18-21C when driving.
So my question(s): should I be worried about the error code not showing up again? Are the temperatures alright? Am I measuring the wrong thing? Should I be getting a new IAT?
I have reserved a replacement if it's needed, so I can pick it up and replace myself (if it's easy?).