Cel p0420

[ReeseLightning]

Type Powertrain -----Auxiliary Emission Controls - ISO/SAE Controlled
Description ---Catalyst System Low Efficiency Conditions
Location ----Bank 1
Cause ----No PCM codes set, ECT input over 167°F, IAT input over O°F, MAF input 12-32 g/sec, engine speed below 4000 rpm, engine load under 63% and steady for 4 minutes, then engine speed at 1000-3000 rpm and VSS at 30-75 mph and the PCM detected that the catalyst O2 storage capacity was below an acceptable level

Installed the Anaconda and had a few codes thrown, it's been cold out and idk if the ecu needs to relearn after this exhaust is installed or I need to fix something. Any info would be appriciated.

 

[Sneakerfix]

Did you unplug the neg cable during the install? If not delete the code shouldn't come back on. Also a good idea to do another datalog

 

[rsSteve]

did you turn off the necessary CEL's associated with removing the first CAT in the ez tune software?

 

[Blue Moon Sonic]

Was gonna say disable the P0420 code or get a j-fitting for the o2 sensor. Both will solve the issue.

 

[ReeseLightning]

The anaconda came with a 3rd O2 bung uncapped off with a supplied bolt, I have a J fitting though. Don't have a red cable but now I do recall a post about turning off certain sensors with the tune cable.

 

[ScarabEpic22]

Reflash your tune with P0420 turned off, but you should be ok with the J fitting. Best way is to change in the tune if you can.

 

[rsSteve]

I have used a j-fitting for 5k miles now, no CEL. I am untuned. So either option will work especially if you dont have the cable.