Hey guys, my inspection is due this month and I have one cell that keeps popping up. It's P1033 "bank 1 sensor 1 slow response." I had a new bosch o2 sensor installed only for a few months, but I've heard that they were known for throwing codes so I switched to a denso sensor but still the same result. I also tried adding an o2 spacer for the secondary o2 sensor since I thought maybe the cause was my high-flow cat (magnaflow) but still no luck. I even tried using another ecu (I have 2 of the same) to make sure it's not my ecu going bad, but that wasn't it either. Does anyone know what may be causing this code or how I may be able to fix it? I've searchedbut couldn't find any real solutions.

Here is the info on my car:

00' Civic EX
-b16a2
-CTR cams
-Hytech header
-Magnaflow high-flow catalytic converter
-PWJDM carbon kevlar intake
-2.5" piping w/ vibrant muffler

Thanks for your time.

 

Did you ever find out what was going on . I am having a similar issue and have emmisons fue by the end of the month.lol