2007 Suzuki SX4 error codes

The "check engine" light is an indicator for a system that monitors many electronic functions in the system, also called the "malfunction indicator lamp" (MIL). It can come on for any of hundreds of different causes from any of the systems that the computer monitors. Some are very important and can lead to further component or engine damage and some are emissions related not as serious but still a problem and need to be repaired.

Your first step is to have the computer scanned to retrieve the trouble codes that were set when the check engine light came on. Those codes will give you specific information about what the computer saw and will get you pointed in the right direction to find your problem. With a 1996 or newer and some 95 cars and you have an AutoZone or Advanced auto parts in your area, they will read them for free. Once you have these code numbers, we can be a lot more specific about what your problem may be.

I can't tell you a thing unless you can give me all the exact code numbers.

DTC P0449: Evaporative Emission System Vent Valve Circuit
DTC P2228 / P2229: Barometric Pressure Circuit Low / High (EVAP Leak Check Model)
DTC P2400: Evaporative Emission System Leak Detection Pump Control Circuit Open

These are all codes related to the evaporative emission control system which has no effect on engine performance. The circuits would have to be tested and troubleshooted to determine the cause of the codes. It could be a single malfunction causing all the codes.