P0420 Fault code immediately after fitting Prodrive full exhaust
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P0420 Fault code immediately after fitting Prodrive full exhaust
Hi All
Just fitted a turbo back Prodrive exhaust to my 03 WRX blob and have immediately got the following fault code appear:
P0420 Catalyst System Efficiency Below Threshold.
Is this normal when upgrading exhausts? I assume this is being triggered by being 1 cat lighter?
I did have to cut my 02 sensor wires as I couldn't get the sensor out whilst fitted to the car. I did however make sure all wires were reconnected correctly (including two black). Could it be that I may have a dodgy connection here?
Many thanks!
Just fitted a turbo back Prodrive exhaust to my 03 WRX blob and have immediately got the following fault code appear:
P0420 Catalyst System Efficiency Below Threshold.
Is this normal when upgrading exhausts? I assume this is being triggered by being 1 cat lighter?
I did have to cut my 02 sensor wires as I couldn't get the sensor out whilst fitted to the car. I did however make sure all wires were reconnected correctly (including two black). Could it be that I may have a dodgy connection here?
Many thanks!
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