Looked around for similar threads and found nothing. Tried posting in General Discussion but thought it might be more fruitful to post here. Please offer some advice if you can.

Completely stock 2010 SSTC. HAHN Racecraft O/R Downpipe installed. Next morning the car threw P2261- something about the vacuum can/bypass valve. Code cleared, and not seen since. Now, the car is throwing P2195: "*The ECM has detected the HO2S11 voltage too low during a power enrichment period. *Failed HO2S11 (Bank 1 Sensor 1) * Failed HO2S11 (Bank 1 Sensor 1) heater circuit."

HAHN claims this should not happen. I knew someone with the same pipe on their 08 and this did not happen. However, said 08 only had the pillar boost gauge, while the 2010's came with the digital readout screen standard. This digital readout has an air/fuel gauge. Since the pipe was put on the 2010, the A/F is blank "No Data Available." Could the digital gauge's possible coupling (I don't know if it actually is or not) with the ECU to read A/F cause the computer to throw the codes? Or is the O2 sensor broken? Thanks.

 

Is your downpipe catless or catted?

 

bump

 

Sounds like something happened either happened to he wideband sensor (pinched wire, damaged sensor) during the install of the dp or the pigtail was unpluged for some reason and never pluged back in. The car should be able to start and run without issues, however you will be in a constant state of what's called "open loop". I'm not going to go into details as to what that means but this could be the reason as to why you threw a P2261 code as well.

 

Thank you

 

Anyone else?

 

Put stock back on. If problem persist after you clear the code then u can rule out the down pipe.
And sebleroux08/tc asked u if it was catted or catless...

 

I agree, I was thinking the same thing.

Sounds like "O/R" stands for Off Road so I'm gonna guess its the catless one. If it is, you will need to either have the defouler or something to remove the rear O2 sensor from the pure exhaust flow.

The odd thing is it sounds like you are having problems with the Wideband which shouldn't be touched at all for the install. Double check that both O2 sensors are plugged in. The Wideband (the one on top) is plugged into the harness right between the fuse box and motor. The secondary is plugged in right on top of the rear trans mount.