Question about 1997 Chrysler Town & Country

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SERVICE ENGINE SOON LIGHT ON

Service engine soon light come on I took to the Autozone when they scan show the codes PO134 y PO171.
PO134=powertrain control module uses the oxygen sensor to calculate the Air/Fuel ratio in the exhaust.
PO171=powertrain control module uses the oxygen sensor to calculate de Air/Fuel ratio of the engine. The computer has recognized a rich or lean condition on one engine bank only.
The car runs well doesn't have any problem, I disconnect the battery trying to reset the light but only for like 3 minutes the light stay off and then turn on again

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You need to change the oxygen sensor. it will soon cause you problems. after you need to take it in to  erase the code.

Posted on Apr 20, 2009

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