I've gone to the experts and they arent helping. I have a 2008 Mazda 5. Codes are reading a lean engine condition.

History: Car went thru a hydrolock condition(not covered under warranty of course). We replaced 2 piston sets and engine runs beautiful. After a few minutes check engine comes on, codes are 2177,2187,2097,2195. Mazda says they dont know what the codes are and recommend replacing PCU, but cant say positively if thats the problem.(I think they're just shooting in the dark)Had an independent specialist for code issues come look at it at my place, he could not tell me what the codes were for either. Codes will clear but come back.

HELP IN ORLANDO!

thanks...

 

Just curious but are you looking for what the actual codes are for, or for what some possible causes might be?

I know P2177 is "engine lean off idle" as I got it about six times during frequent replacements of the purge valve (common on earlier model 3's).

 

First code up is for lean engine, follwing codes are for o2 sensors and such, things that occur as a result of lean condition.