Clear check Engine Light
My 2006 R500 is displaying "CHECK ENGINE" light. I got a Ancel AD410 OBD-II and tried it. It read the code (P0400) but when I try to clear the code using menu, It displays error "Error in communicating with Vehicle ECU". The unit asks to turn engine off but key in Ignition ON position which I made sure.
Tried couple of time but same error each time did not erase the code and the "CHECK ENGINE" is still on.
Is R500 prohibited to these generic OBD-II readers? Should the engine be ON when clearing the code? The last thing I don't want to do is to damage the vehicle computer :-)
Thanks!!


