Hi, I got this P2025 also on my 2003 Aerio (90,000 miles). It is very could around here right now (0 fahrenheit or lower). It seems for Suzuki there is a problem with the cold temperature. I found there is a TSB on this:
Engine Controls - MIL ON/DTC P2025 Set
Section Title: Engine
TSB No. TS 07 12065
SUBJECT: MIL ON DTC P2025
MODEL(S): AERIO (RH420)
CONDITION: In extreme cold climates, the MIL may be ON when the engine is started. The DTC P2025 will be stored in the ECM.
CAUSE: ECM Software Logic
CORRECTION: Using the appropriate service manual, verify the DTC using the troubleshooting chart. If no cause for the DTC is found, reprogram the ECM by using the instructions listed below. Then clear the DTC from the ECM memory.
Originally Posted by jhacen
Hi Monique! I have a 2003 Aerio SX (77,000 miles). My service light came on two days ago. I went to Autozone and they checked my car (for free) with their sensor reader. It said "P2025". They gave me a fuel injector cleaner ( this one is not free) that I put in my gas tank. After the third driving the light was no longer lit.
I would recommend that you go to car place like Autozone, Pepboys et al. They will check your car for free with their sensor reader and take it from there. With the engine light coming on could mean different things.
In NY, they would not pass your inpection if the engine light is on.