P0137- O2 Circuit Low Voltage (Bank 1, Sensor 2)
P0138- O2 Circuit High Voltage (Bank 1, Sensor 2)
P0441- Evaporative Emission System Incorrect Purge Flow
P0455- Evaporative Emission System Leak Detected (gross leak/no flow)
P0606- ECM / PCM Processor
P0420- Catalyst System Efficiency Below Threshold (Bank 1)

I know I have a bad 02 sensor. Running Megan Header, Megan S-Pipe, Maganflow s-pipe back w/ hi-flow cat and resonator. Waiting on new 02 sensor that's been ordered.
Hi-flow cat has bung for 02 (The 02 there now has messed up wires) Any help clearing these would be greatly appreciated. Thanks in advance.

 

Looks like they will all be cleared up when you replace the O2 sensors. I've usually seen the Evap system messages when the MAF goes bad but I'm not 100% on that one. Might also need to do the anti-fouler mod on the header/s-pipe as well. Can anyone else provide further guidance?

 

thanks bkuhl. I'm gonna give the antifouler a try. Still waiting for the 02 sensor to come in. I kinda figured that was the case. Hope it works out...........

 

the O2s are probably not bad... when i installed my megan header and spipe... i had CELs until i put 3 antifoulers in the rear O2.... so unless the wires are cut or singed try using these first... and before you run the car disconnect the battery for 10 min and then let the car idle for a bit before you drive...

 

No, I know it's my 02 sensor. I've relocated it to the hi-flow cat. Wires are screwed up. So you used 3 antifoulers on yours, any CEL since then? Oh also, did you use the long ones or the short antifoulers?