Three problems related to check engine light on have been reported for the 2003 Mitsubishi Galant. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mitsubishi Galant based on all problems reported for the 2003 Galant.
Check engine light came on and the car quit on me when I was driving it.
Check engine light keeps coming on. Told by dealership tune up would fix problem and it didn't fix it. Also car is unstable when first turned on, like it's going to cut off.
2003 Mitsubishi Galant - the car struggles to change gears. A new engine was placed in the car, and vehicle was still having problems with shaking. Information on service provided within six months of purchase. Had problems with the engine - diagnosis with engine cycle misfired and faulty spark plugs. Every four to six months there were major problems with engine. . On 4/28/03 engine service light came on, indicating engine misfired. Replaced piston and engine head. 9/1/04 sparks plug failed, and cylinder misfired. On 9/10/04 the engine was replaced. 12/17/04 all dashboard lights replaced. 3/28/05 diagnosed and replaced hot water valve. On 9/2/05 crank case sensor replaced.