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Intermittent O2 And Cat Codes


Zac

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96R ~120k - It seems like every month or so I get the same codes. Seems that it's the O2 sensor going down the tube but after a reset it seems to be just fine for a while. Every once and awhile while I'm driving the ECU seems to put the car into a mini-limp home mode restricting the car to what feels like < 5 psi. If I continue to drive like that for awhile it'll finally throw codes (P0422 and P0133.) Unplugging the battery for awhile and plugging it back in brings the car back to normal boost and performance. Just clearing the codes using the ODB scantool does nothing to the no boost problem but (of course) clears the light. Seems the 422 says the cat isn't happy while the 0133 seems to be the real problem (front O2 sensor going bad?) My question is why will it drive just fine? Is this a guarantee that it'll go bad soon...it's been going through this stupid cycle about 3 times now over the past few months just because I didn't have the cash to even look into the problem.

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