If yes, one of the reason might be insufficient engine oil pressure. The ECU will not enable the MIVEC solenoid that activates the high cams profile of the MIVEC if not enuff engine oil.
I have some serious question wanna ask u Si fu ~
Mine is oil temp meter ~ but the problem is !!!
i read from the manual itz say only water temp need to cut hose between the radiator and engine then put a adaptor...