Hi Guys,

I got a 99 maximum. The service engine soon light came on and off
several times. It came on again last month.I followed the instruction
below:
the Check Engine light at:
http://vbxmaxima.8m.com/ecu.html

The DTC "translations" are found at:
http://vbxmaxima.8m.com/ecudecoder.html

provided by Daniel B. Martin.

The code is 0505 which means nothing is wrong. Now, I took it to the
state emission test, the machine complains that several sensors are not
available such as O2. I don't know if I did anything wrong or not. The
light went off right after I did the diagnosis (without doing the
procedure of dismissing the light, i.e. repeating the same thing three
times in a row). I did turn the screw counter-clock wise until it reach
the stop.

Any ideas?

Thanks,
Ivan