PO422: O2 Sensor

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2001 Volvo V70 2.4T, 51300miles.

I am 9 days (!) shy of my limited warranty ending on a used Volvo V70, and the check engine light popped up...

Midas guys said that the warning was a PO422...the Main Cat Efficiency Low Bank #1.

I am planning on going to the shore this weekend (100+miles)...is it stupid to run the car for an extended period? I read somewhere about an EMC buildup (snicker as you like, I admitted I am carclueless).

The dealership said it could get to it next Thursday (two days before my warranty ends)...if the warranty expires how much am I looking out-of-pocket. If it is just as the warning said (a PO422), Volvo said it would be $385, if the whole catalyst converter goes it is covered by the Federal Warranty, what other potential problems could it be?

posted by  pompous pugs

bad front or rear o2 sensors or a bad catalytic converter.

posted by  tbaxleyjr

if you replace the cat and still get the code it coulda been bad o2 sensors, or the wiring to the sensors are broken or shorting out

posted by  BanffAutoSpa_ap

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