tacoma you are mistaken, those codes are for OBD1 systems, OBD2 systems use four digit codes, the 117 is actually 0117, the 300 is actually 0300, and the 1416 is correct.
check this website all you OBD2-ers
http://camarossworld.com/Technical/Electrical/ODBII/
P0117 - Engine Coolant Temperature Circuit Low Input
P0300 - Random/Multiple Cylinder Misfire Detected
P1416 - Secondary Air Injection (AIR) System Bank 2 (GM)
id replace the coolant temp sensor, or at least check the wiring,
check your wires for a burnthough or loose connection, or something along those lines.
the secondary air injection malfunction is probly a faulty AIR valve, bank 2 means the passenger side.
these are all pretty general rules, but it should help a little.