Q: check engine light?

code comes up p0420, had a mech. chechk out the catylist converter, found it is ok, cleared codes for two days, 2 days later same code is back

Mechanic Q: NO AIR CONDITIONING?

8 CYLINDER, WONT TAKE A CHARGE, IS THIS COMMON

Mechanic Q: ANT ADVISE ON MY AIR CONDITIONING?

I NEED HELP WITH MY AC

Mechanic Q: what does code p1995 mean???

check engine light is on along with other lights as abs light looks like hazard light and tcs light showing off and brake light hade it scanned and was told they didn't know the code