what do these code readings mean please

[bongo]

hi,
i did a scan on my 2001 4.4 e53 with my creator c310 scanning tool and these codes came up:

1b multiplication.
mixture adaptation bank 2 control limit reached.

and

8c activation map cooling.

what do they mean and how do fix them please.

thanks

[upallnight]

Perhaps if you scan it with a generic scanner so that you can post P codes we can tell you what the problem is. Doesn't you scanner tells you what is causing the code?

[bongo]

i have googled them, after posting it. and it says that the map cooling one is the thermostat sensor.
and the other one could be a leak in air intake or vaccum pipe.
i will check these out in the next few days