Hey! I've been dealing with a very persistent duo of codes. P2178 and p2188 fb1 too rich off idle. Ive done the following repairs:
upstream 02 sensor, MAP, air filter, fuel cap, EVAP canister purge valve, fuel pump, oil change/filter, spark plugs and coilpacks(done pre-codes.)
I can't find any obvious vacuum or intake leaks. I'm at a loss on where to go next and am just surprised none of that did the trick. I've attached 3 separate freeze frames from my basic scanner, if it helps.




thanks!

 

https://www.obd-codes.com/p2188

https://www.obd-codes.com/p2178

 

Was this problem resolved as I'm having exactly the same problem with an 09 CX7 for the past couple months?

Thank You.

 

has not been resolved!

 

Thank you for the reply, Like you I have changed similar items with no obvious vacuum leak. I'll reset the code and run for approximately two days before it pops up again. Fuel consumption and power appears to be normal with the code actve.