Chevy_King1500

iTrader: (7)

truck keeps throwing PO153 bank 2 sensor 1 slow response. just replaced the sensor about a month ago. could the long tubes be causing this? any way to fix it??

Truckshop

iTrader: (17)

what brand sensor did you replace it with?

dewmanshu

iTrader: (4)

yes. yes they are.

There is a plethora of info on this but unfortunately none of it is a rock solid fix. Search that code and a bunch of combinations of words dealing with the o2's and headers.

Short (sorta) basic answer is your narrowband o2's need lots of heat from the exhaust to operate correctly. The headers are causing a cooler exhaust stream, just cool enough to give you a headache on the sensors. Using vette sensors with hotter heaters, wrapping headers, coating headers, tuning those codes out, so on and so on are some ways to deal with it. There's actually a new technical thread floating around HPtuners and EFILive's forums on another way of handling these in the tune process.

Do some research on it and see how you feel about all the different ways to handle. By the way, there's other codes that will eventually pop up on you as well, o2 sensor related.