Mine reads around 40 degrees too cold.
I replaced the sensor in front of the radiator yesterday,still way wrong...nothing changed.
What else could it be?
It does take a while to refresh. Drive around for a few days in varying conditions and check back in.
There isn't a way to calibrate it as far as I'm aware. The sensor itself is just an analog thermistor, so the ECU takes the analog voltage from the sensor and converts that into a temperature reading.
Well I have not drove it since i put it on..started it twice.
I have the front bumper cover off right now to do something "cool" to the headlights.
I'll get back to you guys once I drive it..thanks!