what does these CEL's mean

[d_maniac]

i scanned my car yesterday and got these four codes
P1114
P0299
P0456
P1103

What needs to be changed or looked at?

[04QuattroTurbo]

Here look it up:

http://www.motorworksperformance.com/c/P

[Molotov]

also entering those codes into google typically brings up what they mean.. and usually posts on forums where somebody has already thrown that code, and received help from other people.

[d_maniac]

P1114 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage/IAT - B Circuit Low Input

P0299 Turbo/Super Charger Underboost

P0456 Evaporative Emission Control System Leak Detected (very small leak)

P1103 MAF Sensor In Range But Higher Than Expected

[Molotov]

so.. you have a leak. Pressure test