FoxyRoxy05
Member
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- 2003 Mazda Protege5
I drive an 03 Mazda Protege5, who has given me no problems. Last night, my check engine light started to flash and my engine had no power. I quickly got the codes (thank goodness for my Bluetooth OBDII reader) and got two codes - P0421 (I knew about that one) and P0304. From what I've looked up, I'm going to replace my wires, spark plugs and ignition coils. Should I check/ clean my EGR valve as well? If anyone has pics or schematics, I'd GREATLY appreciate it!