WTF TO134: Oxygen sensor circuit - no activity - bank 1 sensor 1 WTF

[Snail iMAGED]

could possibly be the cat..

widebodyeg, You are the new winner! It is definately my cat, even though I reset the code a few times. Any suggestions about my options? (as in do i have to go OEM?)

[RHCP0801]

OEM is going to be a lot of money, unless its under warranty you are better off going aftermarket or test pipe

[oneglory]

threads merged...you didn't need 2 threads for this.

[Snail iMAGED]

OEM is going to be a lot of money, unless its under warranty you are better off going aftermarket or test pipe

I guess the goal is to have a cat that will not through a code. Anybody have any aftermarket cats that aren't throwing any codes?

& wow, look at that man wrestling that bull! It must be a metaphor

[RHCP0801]

aftermarket cats wont throw codes, it just depends what you get....start searching and calling places

[Blue03Si]

Well another option if you don't want to fix the cat immediately (due to costs) would be to use an o2 de-fouler like the test pipe guys use to get rid of their cel.

[Snail iMAGED]

that's exactly what i did, the spark plug non fouler for the second o2. Only it didn't completely work. Timeline:
000 miles - non fouler
150 miles - CEL
~500 miles - CEL magically off
510 miles - State Inspection (Pass ! :D)
517 miles - CEL back on
so i guess i really lucked out. I am installing some new pulstar iridium spark plugs this weekend, so that may help keep the CEL off (not that i care now) if the signals are dancing around the CEL threshold.

[Blue03Si]

that's exactly what i did, the spark plug non fouler for the second o2. Only it didn't completely work. Timeline:
000 miles - non fouler
150 miles - CEL
~500 miles - CEL magically off
510 miles - State Inspection (Pass ! :D)
517 miles - CEL back on
so i guess i really lucked out. I am installing some new pulstar iridium spark plugs this weekend, so that may help keep the CEL off (not that i care now) if the signals are dancing around the CEL threshold.

I had made a bone head move and fouled my primary O2 sensor and the check engine light came on P0134 (primary o2). But the car never went into limp mode, so I guess it was an intermitent problem. Check engine light would go off for a few hundred miles and then come back on. I drove the car like that for almost 2 years without issue. I finally replaced the sensor and its off now. If I were you I would not stress to much about the CEL if you passed your inspection. Just keep checking periodically to make sure you don't have any new codes.