I have a 2006 honda fit with a 1.3L I-DSI engine, the cold engine indicator still shows itself even after a long drive, normally, it disappears minutes after startup regardless of weather and theres no snow where im from. There was one time where i just had a short stop but the car wont start, i had hold the pedal to the floor while cranking the engine, after it started the idle rpm was at 1500. I know rpms are high during a cold start but this time its already warm.
What i tried:
I started the car and let it warm itself up before going, surprisingly, the indicator disappeared only to reappear after a short drive. It sometimes disappears for a moment then its back again. I used a scan tool but no codes rendered and the coolant temp is at 36°C.
Whats causing this? a faulty sensor? if so what sensor is it? can it be replaced? (It first happened on a cold rainy night while i was driving)
as i reviewed my question, i now discovered that its very confusing (sorry about that, english is not my mother tongue) the problem is basically the cold engine indicator still flashes itself despite the engine being plenty warm after 30 minutes of driving and its causing rough startups and high idle rpms at 1500rpm even though the engine is already warm. (the rough startup only happened once tho)