ChicagoSpeed996

Hello all
I have a line on a 997.2 throwing a P2415 code. It has M&M headers and 200 cell cats with PSE. Any ideas if this is a usual code or something more sinister? The car drove fine, not hiccups or anything. Smooth all the way to redline. Thanks for any help!

Petza914

Looks like an O2 Sensor Code - bank 2 / sensor 1. Could mean loose exhaust connection somewhere or a few other things. I don't know that there are any "usual" codes since there shouldn't be any How many miles? When were plugs & coils last done? What kind of air filter, etc?

ChicagoSpeed996

49,000 miles No indication of plugs or coil changes. It has a fabspeed intake, IPD plenum.

ChicagoSpeed996

I have more information, the codes are P2197 and P2415. Both seem catalytic converter and O2 sensor related. I am sure it is due to the tune or a bad O2 sensor.

semicycler

Sometimes with 200 cell high flow cats you need an 02 spacer to avoid CEL's. Something like this:

Macster

My research indicates both are O2 sensor related.

P2415: O2 Sensor Exhaust Sample Error Bank 2 Sensor 1.

P2197: Oxygen (O2) Sensor Signal Biased / Stuck Lean (Bank 2 - Sensor 1).

Stuck "lean" means there is an excess of oxygen in the exhaust gas. This suggests an exhaust system leak.

A failed O2 sensor flat lines at 0.45V and there would be a different code in this case. Also, there is a separate error code that is thrown if the sensor heater is not working.

For a bad converter you would see P0420/P0430 (depending upon which side the bad converter was on).

While plugs are getting up in miles the error codes do not suggest a problem with plugs (or coils).

Exhaust leak or possibly a bad sensor.

I'm not that comfortable swapping O2 sensors side to side to see if the error follows the suspected sensor. There is a risk one damages the good sensor.

My inclination absent any signs of an exhaust leak would be to replace both #1 sensors (at least) and clear the error codes and road test the car.

millertimefl

I had similar codes a few months after my header install. They used crappy gaskets when they installed it and they blew out all over the place and it was leaking. I thought it got louder and crapper sounding. PPI should be able to lift it up and start it and see if there are leaks. My dealer used a small mirror , which fogged up, and a tissue to show me the air blowing where it shouldn't. I had to replace all gaskets with factory ones. No issues after.

ChicagoSpeed996

Thank you for the replies!