WRX USDM 2004 Catless Down Pipe CEL fix???????

[sebf]

Does anybody know how to disable the CEL that is due to a catless down-pipe? I actually cut the sensor because it was seized on my stock down-pipe. I have Reflashed my ECU 4 times now using EcuFlash with no success at getting rid of the CEL.

1st try - disabled (P0545) EGT SENSOR CIRCUIT LOW
2nd try - disabled (P0546) EGT SENSOR CIRCUIT HIGH
3rd try - disabled (P1312) EGT SENSOR MALFUNCTION
4th try - disabled (P0420) CAT EFFICIENCY BELOW THRESHOLD

I am out of guesses. Does anybody know what they are doing? I need help.

Thanks

[Dweeb]

Are you talking about the O2 sensor after the CAT ?? then it would be the rear O2 sensor codes that you need to disable.

what code are you showing (what code is the ECU spitting out) ?? it may be something else also...

[sebf]

I disabled all the Rear O2 sensor codes and it worked! I had a feeling that it was the problematic sensor but was not 100% sure. Thanks for the help!!

My next step is to tune my engine to increase performance, but keep the reliability I have also. Any good advice?

Thanks