RM O2 Check Lamp Canceller

When replacing with an external sports muffler, the CPU determines that the efficiency of the catalyst system has fallen below the limit value due to changes in the exhaust flow rate and flow rate, and some vehicles turn on the engine check lamp.

OBD-II failure diagnostic code "P0420".
It is possible to cancel on the data like our CPU for 86 / BRZ, but in general, go to the dealer every time the check lamp lights up, or access the in-vehicle ECU with equipment with a failure diagnosis function.
The [O2 Check Lamp Canceller] can be stopped by simply plugging it into the vehicle's OBD-II connector .
Since it does not respond to errors other than "P0420", if an engine trouble occurs, the check lamp lights up and the abnormality can be recognized .
Also, he doesn't have to worry about running out of battery because he automatically goes to sleep mode after the vehicle stops .
Domestic cars after 2002, foreign cars after 1996, vehicles with OBD-II failure diagnosis function.