Well the first..
OBD-II Trouble Code: P0100 Mass Air Flow (MAF) Circuit Malfunction
A code P0100 may mean that one or more of the following has happened:
* The MAF may be disconnected, or a wiring connection may be bad
* The MAF sensor may be faulty
Is the MAF sensor, basically a sensor which tells the ECU how much air flow is passing through the air filter and into the engine.
It does it by warming a fine metal mesh, and seeing how much power is needed to keep it at a constant temperature. So the more air flow through it would cool the metal, therefore it can work out that a given amount of air is passing into the engine.
If your changing the MAF sensor, bit of a pig to get to, don't buy a cheap chinese import selling on ebay. get a real bosch replacement.
The Second, P0655 Engine Hot Lamp Output Control Circuit Malfunction..
Well, i'm not going to confess to have a single clue. I'm sure the two are linked... i.e. a faulty MAF might bring this error up too..