Question about 2001 Kia Sportage

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Need to know how to get rid of these codes - 2001 Kia Sportage

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PO 440 & PO 422, Has to do with the Oxagen sensors, PO 301 is a m,issfire code,That has to do with the number one cylinder, That mostly has to do with a bad spark plug, Or spark plug wire , If the vehilcle has lower (Mileledge) On it, If it has a lot of miles on it the coil pack could be getting weak,

Posted on Nov 08, 2012


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: 2001 kia sephia check engine

fixed it by changeing cat

Posted on Apr 10, 2009

  • 34 Answers

SOURCE: hold lite and and a p1624 code on a 2001 sportage

Code number p1624 is MIL Request Signal from TCM to ECM. which means malfunction indication light(MIL) is requesting a signal from your engine control module(ECM) or Transmission control module(TCM) i would reccomend u take it to the dealership to get it checked out.

Posted on Jun 09, 2009

  • 226 Answers

SOURCE: i have a 2001 kia sephia obd code p0422 i replaced

There should only be one "monitored" convertor on that car. The one before the last oxygen sensor

Posted on Nov 22, 2009

  • 41 Answers

SOURCE: trouble code po171 for engine running lean

I have a website that may help

Posted on Dec 19, 2009

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SOURCE: 1996 spotage kia p0422

P0422 Main Catalyst Efficlency Below Threshold (Bank 1) The catalyst’s efficiency is demonstrated by its ability to oxidize CO and hydrocarbon emissions. The Engine Control Module (ECM) compares the output signals of the front and rear oxygen sensors to determine whether the output of the rear sensor is beginning to match the output of the front oxygen sensor. Air/fuel mixture compensation keeps the frequency of the front oxygen sensor high due to the changes from rich-to-lean comvustio. The catalyst causes the rear oxygen sensor to have a lower frequency. As the catalyst wears, the rear oxygen sensor’s signal trace begins to match the front oxygen sensor’s signal trace. That is because the catalyst becomes saturated with oxygen and cannot use the oxygen to convert hydrocarbon and CO into H₂O and CO₂ with the same efficiency as when it was new. A completely worn catalyst shows a 100% match between the frequency of the front and rear sensors. The ECM sets P0422 if the average of caculated oscillation size of rear HO2S value is higher than threshold value during predetermined time.

Posted on Apr 30, 2010

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