The passages for the Exhaust Gas Recirculation (EGR) system can become restricted or clogged causing the Check Engine Light to illuminate. The EGR valve will need to be inspected and the passages cleaned.
Resources for the Repair and Maintenance of your 2003 Mazda Protege5
2003 Mazda Protege5
2003 Mazda Protege5 Problems
2003 Mazda Protege5 Questions and Answers
I was driving and it wasn't shifting gears. Then it said transaxle. Now it seems fine should I leave it alone?
Engine is idling low (650 rpm)-- rough and stalls.
Engine check light on with code P0300 only.
Changed the plugs and air-filter to no effect.
Even when the idle is held at 1000 rpm it feels a bit r...
Is timing belt change and new water pump required?
I live in Georgia as far as climate concerns
how does the belt release tension so i can slip in the serpentine belt.
I have gotten a/c and serpentine belt replaced and my car still has a horrible squeal. I don't know if it could be the crankshaft pulley and if it is that about how much would that cost to fi...