2001 Kia Sportage code P0422

Tiny
MIKEUSAF
  • MEMBER
  • 2001 KIA SPORTAGE
  • 4 CYL
  • 4WD
  • MANUAL
  • 100,001 MILES
I have a 2001 kia sportage with engine code p0422 I recently purchesed the car and durring test drive I drove it for about 30 miles ranging anywhere from 15 mph to almost 70 mph with no problems so I bought the car and shortly after filling up with gas the engine light came on with code p0422. At first I thought watter in gas so bought water remover (stp brand) reset code and within 3 miles came right back on so then added octane booster and agian reset code and this time stayed off for about 50 miles then came back on. What should I do next?
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Friday, April 25th, 2008 AT 5:18 PM

4 Replies

Tiny
RASMATAZ
  • EXPERT
P0422. Main Catalyst Efficiency Below Threshold (Bank 1) check the oxygen sensor
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Friday, April 25th, 2008 AT 5:37 PM
Tiny
MIKEUSAF
  • MEMBER
Replace o2 sensor ok whitch on internet says theres a upper and a lower
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Friday, April 25th, 2008 AT 5:55 PM
Tiny
RASMATAZ
  • EXPERT
Its on the upper see below


https://www.2carpros.com/forum/automotive_pictures/12900_o2_1.jpg

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Friday, April 25th, 2008 AT 7:08 PM
Tiny
MIKEUSAF
  • MEMBER
Looked at the connector and found out I had a oil leak from the valve cove so I torqued all the bolts useing a criss/cross pattern and sprayed the area with degreaser then washed it off and dried with a air compressor, reset the computer and drove went about 32 miles ranging from 15 - 50 mph with no defect. Thanks for all your help, you guys rock
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Friday, April 25th, 2008 AT 8:18 PM

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