CEL Prob, please help!

[SQ Hatch]

So after running diagnostics, it reads code 41. It has something to do w/ a sensor 1 heater malfunction, which is listed as air/fuel sensor. Anyone have any idea what this is and how to fix it? Is it referring to a oxygen sensor or is this something different? I reset the ecu and drove it around, it runs fine and the CEL only comes back on once I open it up past 6k. Any info is appreciated. BTW, mods are midpipe, CAI, hondata heatshield and recently installed motor mounts. I dunno how any of that would affect anything but you never know.

This is exactly what the code reads:
41
P1166
11-96
Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater Circuit Malfunction

41
P1167
11-99
Air Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction

[chunky]

primary 02. they're something like 200 bucks to replace.

[SQ Hatch]

Is this covered under warranty? I'm only at 17k miles. Will the mods listed void it? Also will the 02 being busted affect performance or mpg?

[andy]

It should/could be affecting gas mileage. Ty's Si had this same problem, he said his gas mileage went down some (running rich I think) and idle was a bit sloppy.

It should be covered under warranty, unless they are going to give you crap about your midpipe, but that's BS if they do.

[chunky]

should be covered under warranty. midpipe shouldn't affect primary o2 b/c it's downstream from the cat. if you have the stock parts, return to stock to avoid hassle.

[mrfixit687]

did you bottom out your car or something and hit the o2 sensor

[02SilverSiHB]

maybe you yanked on the o2 sensor wire some how while installing the es motor mounts? who knows, just take the cai off, put the stock one on, and take it to honda and just say your engine light came on...act dumb...they'll fix it.

[SQ Hatch]

No bottoming out, and if i change back my cai do you think they'll notice my midpipe and/or motor mounts and give me shit for that? I doubt they'll even notice the heatshield though.