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The Following brands are available based on your search.

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    Mando
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    NGK
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Best Selling Genuine Kia O2 Sensors

  • We Stock the following top leading brands, including Mando, Bosch, Delphi, Denso
  • Constantly Updated Inventory of Kia Replacement O2 Sensor Parts

We stock O2 Sensor parts for most Kia models, including Amanti, Forte, Optima, Rio, Rio5, Rondo, Sedona, Sephia, Sorento, Soul, Spectra, Spectra5, Sportage.

Mando
2008 Kia Optima Oxygen Sensor 4 Cyl 2.4L Mando

P311-02F9ADB    W0133-1780715  New

Qty:
$120.79
Mando Oxygen Sensor
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
Brand: Mando
Additional Fitment Information:
Vehicle Block Engine CID CC
2008 - Kia Optima L 4 Cyl 2.4L - 2359
Bosch
Qty:
$55.43
Bosch Oxygen Sensor  Downstream
  • Bosch Oxygen Sensor
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Downstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2016 - Kia Forte5 Downstream L 4 Cyl 1.6L 97 1591
Bosch
2011 Kia Rio Oxygen Sensor - Upstream 4 Cyl 1.6L Bosch - Universal Oxygen Sensor

P311-40C6811    15733  New

Qty:
$55.43
Bosch Oxygen Sensor  Upstream
  • Bosch Oxygen Sensor
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Upstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2011 - Kia Rio Upstream L 4 Cyl 1.6L - 1599
Bosch
Qty:
$55.43
Bosch Oxygen Sensor  Downstream Right
  • Bosch Oxygen Sensor
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Downstream Right
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2011 - Kia Borrego Downstream Right V 6 Cyl 3.8L - 3778
Bosch
Qty:
$55.43
Bosch Oxygen Sensor  Downstream Left
  • Bosch Oxygen Sensor
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Downstream Left
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2011 - Kia Borrego Downstream Left V 6 Cyl 3.8L - 3778
Bosch
Qty:
$55.43
Bosch Oxygen Sensor  Downstream
  • Bosch Oxygen Sensor
  • From 06/2001
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Downstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2001 - Kia Spectra Downstream L 4 Cyl 1.8L - 1793
Bosch
Qty:
$55.43
Bosch Oxygen Sensor  Upstream
  • Bosch Oxygen Sensor
  • From 06/2001
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Upstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2001 - Kia Spectra Upstream L 4 Cyl 1.8L - 1793
Bosch
Qty:
$55.43
Bosch Oxygen Sensor  Upstream Right
  • Bosch Oxygen Sensor
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Upstream Right
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2016 - Kia K900 Upstream Right V 8 Cyl 5.0L - 5038
Bosch
Qty:
$55.43
Bosch Oxygen Sensor  Upstream Left
  • Bosch Oxygen Sensor
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Upstream Left
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2016 - Kia K900 Upstream Left V 8 Cyl 5.0L - 5038
Bosch
Qty:
$55.43
Bosch Oxygen Sensor  Downstream
  • Bosch Oxygen Sensor
  • Located After Primary Converter
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Downstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2015 - Kia Forte Downstream L 4 Cyl 1.8L - 1797
Bosch
Qty:
$55.43
Bosch Oxygen Sensor  Upstream
  • Bosch Oxygen Sensor
  • Installed at bottom
  • Universal Oxygen Sensor
  • Product Attributes:
    • Automotive Item Weight (lbs): 0.339512 Lb
    • Connector Shape: None
    • Hex Size (Oxygen Sensor): 22 Mm
    • Mounting Type: Threaded
    • Oxygen Sensor Type: Narrow-band Heated
  • Bosch leads the way in oxygen sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.
Brand: Bosch
Position: Upstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2016 - Kia Forte5 Upstream L 4 Cyl 2.0L 122 1999
Delphi
2003 Kia Optima Oxygen Sensor - Front Right 6 Cyl 2.7L Delphi

P311-1F852C8    ES10883  New

SG1500 , 5S9943 , 25180 , 25195 , 5S6253 , 5S4230 , 5S6250 , 25170 , OS2533 , 3921037510 , 3921037543 , 5S6252 , SU7763 , SU6787 , 15655 , SU7761 , 5S10096 , 39210-37510 , 25069 , 3921037533 , 15654 , OS2482 , 13463 , SU6232 , 15651 , OS2333 , 234-4191 , SG1699 , SU6785 , 5S4496 , 1564277 , 25181 , OS2481 , 3921037530 , 13446 , SG1696 , 2344193 , SG1645 , 3921037513 , 392103E130 , 1564271 , 25159 , OS2336 , 5S4499 , SU11551 , 3921037190 , 392103E210 , 3921037540 , 2344429 , SG1504 , 25024461 , SU7764 , 13466 , SG1644 , SG1503 , SU11549 , OS2536 , 25194 , SU6788 , SU11396 , 392103E110 , OS2337 , 5S10098 , SG1652 , 5S4498 , OS2489 , 250-24461 , 39210-3E110 , 156-4271 , 2344191 , 2344438

Qty:
$50.39
  • Oxygen Sensor
  • Harness Length: 460 mm Wrench Size: 7/8 in From 01/06/2003 Delphi is an OEM supplier
  • Product Attributes:
    • Connector Shape: Square
    • Overall Length: 515.0
    • Sensor Type: Heated
    • Thread Size: 18 X 1.5 Mm
  • OE connectors and wire lengths within 3 inches of OE specifications; Unique sensor coatings to resist contamination; Long lasting reliable operation.
Brand: Delphi
Position: Front Right
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2003 - Kia Optima Front Right V 6 Cyl 2.7L - 2656
Delphi
2003 Kia Optima Oxygen Sensor - Front Left 6 Cyl 2.7L Delphi

P311-1F852C8    ES10883  New

SG1500 , 5S9943 , 25180 , 25195 , 5S6253 , 5S4230 , 5S6250 , 25170 , OS2533 , 3921037510 , 3921037543 , 5S6252 , SU7763 , SU6787 , 15655 , SU7761 , 5S10096 , 39210-37510 , 25069 , 3921037533 , 15654 , OS2482 , 13463 , SU6232 , 15651 , OS2333 , 234-4191 , SG1699 , SU6785 , 5S4496 , 1564277 , 25181 , OS2481 , 3921037530 , 13446 , SG1696 , 2344193 , SG1645 , 3921037513 , 392103E130 , 1564271 , 25159 , OS2336 , 5S4499 , SU11551 , 3921037190 , 392103E210 , 3921037540 , 2344429 , SG1504 , 25024461 , SU7764 , 13466 , SG1644 , SG1503 , SU11549 , OS2536 , 25194 , SU6788 , SU11396 , 392103E110 , OS2337 , 5S10098 , SG1652 , 5S4498 , OS2489 , 250-24461 , 39210-3E110 , 156-4271 , 2344191 , 2344438

Qty:
$50.39
  • Oxygen Sensor
  • Harness Length: 460 mm Wrench Size: 7/8 in From 01/06/2003 Delphi is an OEM supplier
  • Product Attributes:
    • Connector Shape: Square
    • Overall Length: 515.0
    • Sensor Type: Heated
    • Thread Size: 18 X 1.5 Mm
  • OE connectors and wire lengths within 3 inches of OE specifications; Unique sensor coatings to resist contamination; Long lasting reliable operation.
Brand: Delphi
Position: Front Left
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2003 - Kia Optima Front Left V 6 Cyl 2.7L - 2656
Delphi
2006 Kia Optima Oxygen Sensor - Front Right 6 Cyl 2.7L Delphi

P311-1F852C8    ES10883  New

SG1500 , 5S9943 , 25180 , 25195 , 5S6253 , 5S4230 , 5S6250 , 25170 , OS2533 , 3921037510 , 3921037543 , 5S6252 , SU7763 , SU6787 , 15655 , SU7761 , 5S10096 , 39210-37510 , 25069 , 3921037533 , 15654 , OS2482 , 13463 , SU6232 , 15651 , OS2333 , 234-4191 , SG1699 , SU6785 , 5S4496 , 1564277 , 25181 , OS2481 , 3921037530 , 13446 , SG1696 , 2344193 , SG1645 , 3921037513 , 392103E130 , 1564271 , 25159 , OS2336 , 5S4499 , SU11551 , 3921037190 , 392103E210 , 3921037540 , 2344429 , SG1504 , 25024461 , SU7764 , 13466 , SG1644 , SG1503 , SU11549 , OS2536 , 25194 , SU6788 , SU11396 , 392103E110 , OS2337 , 5S10098 , SG1652 , 5S4498 , OS2489 , 250-24461 , 39210-3E110 , 156-4271 , 2344191 , 2344438

Qty:
$50.39
  • Oxygen Sensor
  • Harness Length: 460 mm Wrench Size: 7/8 in Delphi is an OEM supplier
  • Product Attributes:
    • Connector Shape: Square
    • Overall Length: 515.0
    • Sensor Type: Heated
    • Thread Size: 18 X 1.5 Mm
  • OE connectors and wire lengths within 3 inches of OE specifications; Unique sensor coatings to resist contamination; Long lasting reliable operation.
Brand: Delphi
Position: Front Right
Additional Fitment Information:
Vehicle Engine VIN Position Block Engine CID CC
2006 - Kia Optima 4 Front Right V 6 Cyl 2.7L - 2656
Delphi
2006 Kia Optima Oxygen Sensor - Front Left 6 Cyl 2.7L Delphi

P311-1F852C8    ES10883  New

SG1500 , 5S9943 , 25180 , 25195 , 5S6253 , 5S4230 , 5S6250 , 25170 , OS2533 , 3921037510 , 3921037543 , 5S6252 , SU7763 , SU6787 , 15655 , SU7761 , 5S10096 , 39210-37510 , 25069 , 3921037533 , 15654 , OS2482 , 13463 , SU6232 , 15651 , OS2333 , 234-4191 , SG1699 , SU6785 , 5S4496 , 1564277 , 25181 , OS2481 , 3921037530 , 13446 , SG1696 , 2344193 , SG1645 , 3921037513 , 392103E130 , 1564271 , 25159 , OS2336 , 5S4499 , SU11551 , 3921037190 , 392103E210 , 3921037540 , 2344429 , SG1504 , 25024461 , SU7764 , 13466 , SG1644 , SG1503 , SU11549 , OS2536 , 25194 , SU6788 , SU11396 , 392103E110 , OS2337 , 5S10098 , SG1652 , 5S4498 , OS2489 , 250-24461 , 39210-3E110 , 156-4271 , 2344191 , 2344438

Qty:
$50.39
  • Oxygen Sensor
  • Harness Length: 460 mm Wrench Size: 7/8 in Delphi is an OEM supplier
  • Product Attributes:
    • Connector Shape: Square
    • Overall Length: 515.0
    • Sensor Type: Heated
    • Thread Size: 18 X 1.5 Mm
  • OE connectors and wire lengths within 3 inches of OE specifications; Unique sensor coatings to resist contamination; Long lasting reliable operation.
Brand: Delphi
Position: Front Left
Additional Fitment Information:
Vehicle Engine VIN Position Block Engine CID CC
2006 - Kia Optima 4 Front Left V 6 Cyl 2.7L - 2656
Delphi
2008 Kia Sportage Oxygen Sensor - Rear Right 6 Cyl 2.7L Delphi

P311-1F852C8    ES10883  New

SG1500 , 5S9943 , 25180 , 25195 , 5S6253 , 5S4230 , 5S6250 , 25170 , OS2533 , 3921037510 , 3921037543 , 5S6252 , SU7763 , SU6787 , 15655 , SU7761 , 5S10096 , 39210-37510 , 25069 , 3921037533 , 15654 , OS2482 , 13463 , SU6232 , 15651 , OS2333 , 234-4191 , SG1699 , SU6785 , 5S4496 , 1564277 , 25181 , OS2481 , 3921037530 , 13446 , SG1696 , 2344193 , SG1645 , 3921037513 , 392103E130 , 1564271 , 25159 , OS2336 , 5S4499 , SU11551 , 3921037190 , 392103E210 , 3921037540 , 2344429 , SG1504 , 25024461 , SU7764 , 13466 , SG1644 , SG1503 , SU11549 , OS2536 , 25194 , SU6788 , SU11396 , 392103E110 , OS2337 , 5S10098 , SG1652 , 5S4498 , OS2489 , 250-24461 , 39210-3E110 , 156-4271 , 2344191 , 2344438

Qty:
$50.39
  • Oxygen Sensor
  • Harness Length: 460 mm Wrench Size: 7/8 in Delphi is an OEM supplier
  • Product Attributes:
    • Connector Shape: Square
    • Overall Length: 515.0
    • Sensor Type: Heated
    • Thread Size: 18 X 1.5 Mm
  • OE connectors and wire lengths within 3 inches of OE specifications; Unique sensor coatings to resist contamination; Long lasting reliable operation.
Brand: Delphi
Position: Rear Right
Additional Fitment Information:
Vehicle Engine VIN Position Block Engine CID CC
2008 - Kia Sportage - Rear Right V 6 Cyl 2.7L - 2656
Delphi
2008 Kia Rio5 Oxygen Sensor - Front Delphi

P311-12FC773    ES20158  New

5S5701 , OS2479 , 3921023950 , SU9184 , REA1073 , SU7196 , 13461 , 3921022610 , REA1107 , 5S7696 , 138-679 , 3921022620 , 1564285 , 2344404 , SG857 , 2344851 , OS1607 , 3921023750 , 5S4246 , OS2532 , 13467 , SU11545 , 138679 , SG1642 , SG1695 , 5S10092 , 1564268 , XGN857 , 24588 , OS1611 , SU5889 , 39210-22610 , 5S3455 , SU6267 , SG853 , 25024349 , 156-4268 , 3921026620 , 13356

Qty:
$61.09
  • Oxygen Sensor
  • Wrench Size: 7/8 in Delphi is an OEM supplier
  • Product Attributes:
    • Connector Shape: Square
    • Overall Length: 375.0
    • Sensor Type: Heated
    • Thread Size: 18 X 1.5 Mm
  • OE connectors and wire lengths within 3 inches of OE specifications; Unique sensor coatings to resist contamination; Long lasting reliable operation
Brand: Delphi
Position: Front
Additional Fitment Information:
Vehicle Submodel Position
2008 - Kia Rio5 LX Front
Denso
2002 Kia Sportage Oxygen Sensor - Upstream 4 Cyl 2.0L Denso - OE Style

P311-258DF83    234-4686  New

13404 , SG640 , 0K08A18861B , 0K01A18861A , SG576 , 213-3006 , ES10730 , SG616 , 13797 , OS1068 , 0K2AA18861 , SG617 , OS1271 , OS1272 , 24583 , 75-2351 , 0K08B18861B , 75-2149

Qty:
$53.19
Denso Oxygen Sensor  Upstream
  • Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 15.75
  • OE Style
  • Product Attributes:
    • Mounting Type: Threaded
    • Sensor Type: Heated
    • Thread Diameter: 0.708
    • Wiring Harness Length: 15.75
  • DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Position: Upstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2002 - Kia Sportage Upstream L 4 Cyl 2.0L 122 1998
Denso
2002 Kia Sportage Oxygen Sensor - Downstream 4 Cyl 2.0L Denso - OE Style

P311-258DF83    234-4686  New

13404 , SG640 , 0K08A18861B , 0K01A18861A , SG576 , 213-3006 , ES10730 , SG616 , 13797 , OS1068 , 0K2AA18861 , SG617 , OS1271 , OS1272 , 24583 , 75-2351 , 0K08B18861B , 75-2149

Qty:
$53.19
Denso Oxygen Sensor  Downstream
  • Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 15.75
  • OE Style
  • Product Attributes:
    • Mounting Type: Threaded
    • Sensor Type: Heated
    • Thread Diameter: 0.708
    • Wiring Harness Length: 15.75
  • DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Position: Downstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2002 - Kia Sportage Downstream L 4 Cyl 2.0L 122 1998
Denso
2002 Kia Spectra Oxygen Sensor - Upstream 4 Cyl 1.8L Denso - OE Style

P311-258DF83    234-4686  New

13404 , SG640 , 0K08A18861B , 0K01A18861A , SG576 , 213-3006 , ES10730 , SG616 , 13797 , OS1068 , 0K2AA18861 , SG617 , OS1271 , OS1272 , 24583 , 75-2351 , 0K08B18861B , 75-2149

Qty:
$53.19
Denso Oxygen Sensor  Upstream
  • Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 15.75
  • To 05/22/01
  • OE Style
  • Product Attributes:
    • Mounting Type: Threaded
    • Sensor Type: Heated
    • Thread Diameter: 0.708
    • Wiring Harness Length: 15.75
  • DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO's exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Brand: Denso
Position: Upstream
Additional Fitment Information:
Vehicle Position Block Engine CID CC
2002 - Kia Spectra Upstream L 4 Cyl 1.8L - 1793

Latest Kia Repair and O2 Sensor Installation Advice

CarJunky AutoAdvice

o2 sensor on '95 jeep

Showing 2 out of 4 Posts | Show 2 Hidden Posts
Question From completelyhis on o2 sensor on '95 jeep

My o2 sensor on my '95 jeep keeps faulting. when i hook up the code reader it says something about high voltage something or other (sorry, don't have the code reader with me, and my memory is worthless).

i replaced the sensor, but it keeps happening. any suggestions as to what to look for?

Response From way2old

See if you can get the exact code numbers and post back. There are too many variables on the O2 sensors. Vacuum leaks, too much fuel, not enough fuel, exhaust leak, exhaust restrictions, MAF or MAP reading wrong, bad wiring, bad connections. These are just a few of the things that can cause an O2 code.

Response From completelyhis

The exact code is

21
Oxygen sensor bank 1 position 1 shorted to high voltage


I just replaced this sensor about 2 weeks prior to the code showing up. I notice a foul smell in the exhaust, plus it seems to be putting out a nasty blackness (dang, new muffler and cat. conv too!!)

The check engine light comes on/off intermittantly, the engine runs much worse when the check engine light is on, so I do think it is a "real" problem.

Response From dave284 Top Rated Answer

JUST A NOTE , I HAD A KIA WITH SAME PROBLEM AFTER REPLACING 02 SENSOR THIRD TIME , I REALIZED SOME OF THE AFTER MARKET PARTS DON'T WORK ,THE OEM DID THE TRICK

98 kia sephia check engine light

Showing 2 out of 2 Posts
Question From cardguy on 98 kia sephia check engine light

I have a 98 kia sephia and the check engine light keeps coming on, we take it to the mechinic and when we get it back a day later it starts going off again, what could be causing this problem???

Response From Tom Greenleaf Top Rated Answer

What was the code? Seems like it was reset/cleared and just comes back on as the problem is not just a one time fault. O2 sensors are somewhat common and can just have a momentary blip and clear themselves if really ok. What was the code will be the answer,

T

2008 Kia Spectra CEL: P2251

Showing 5 out of 7 Posts | Show 2 Hidden Posts
Question From StarStuff on 2008 Kia Spectra CEL: P2251

I was getting the check engine light code P0032, which was due to one of these possible causes:

- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 harness is open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)

Before I replaced the faulty O2 sensor, I disconnected the battery that way the computer could reset when I turned the car back on, with the new sensor in. Well I did this and when I turned the car on, no CEL, however, about 5 minutes on the road and I'm getting CEL again. This time the code read:

P2251

-Linear heated O2 sensor-bank 1, sensor 1 (HO2S11) reference ground circiut
Probable cause:

-Open or short circuit condition
- Poor electrical connection
- Failed HO2S11 (Bank 1 sensor 1)

It is worth noting I have driven the car about 100 miles and started it at least 30 times since replacing the O2 sensor.


Thanks!

Response From Hammer Time

That's an 0/2 heater code. You have to verify power and ground arriving at the sensor on the like colored wires. If you have both, then you have a bad sensor.

Response From Discretesignals

What brand and part number sensor did you put in it?

That last code you got basically means the computer thinks the reference ground circuit is open. It has nothing to do with the heater circuit. The only way to see how this sensor is functioning is with a high end scan tool. The engine controller sends small positive and negative amounts of current to the A/F sensor's pumping cell in attempts to balance the sensor. The amount of current that is used and its polarity is monitored by the PCM. This is how the PCM calculates the fuel/air mixture. The PCM converts the measurements it sees to a voltage value that is displayed on the scan tool. The voltage usually stays around 1.9-2.0 volts when the air fuel mixture is 14.7:1. If the voltage goes lower than 1.9-2.0 volts the engine is running rich, so the computer will take fuel away from the engine. If it goes higher than 1.9-2.0 volts it is running lean and the computer will add fuel to the engine.

The computer watches the voltage to make sure it goes around 3.2 volt or higher during decel when the injectors are turned off. This is because there is nothing, but a lot of O2 in the exhaust when the injectors are shut down. If the computer doesn't see the voltage go high or go beyond a certain threshold, it assumes the reference ground is open.

Inspect the O2 harness and connector on the harness end really good. Make sure you don't have any broken, damaged connector terminals or wiring.

Response From StarStuff

Thank you for the reply!

This is the exact O2 sensor I installed:

link deleted ........................ not allowed

I took it to a mechanic today and he measured the voltage(or something electrical) on the O2 sensor and said it was fine, although he said he wasn't an expert in electrical and that I should get a second opinion. Once again, thank you for the input and any further information would be greatly appreciated!

Response From Discretesignals Top Rated Answer

That sensor could be a chinese knockoff. Never heard of the company (Replacement) that makes it.
Get yourself a dealer OEM, NTK, or Denso sensor.

Response From Hammer Time

Yep, I didn't look into it far enough. DS will take it from here.

Response From Discretesignals

LOL...thanks.

Just think of it as a MAF sensor. That is how I remember how it works. MAF sensor electronics control the amount of current to the MAF hot wire. The amount of current used to keep the wire hot is then converted to a linear or digital signal that the engine computer uses to determine how much air is flowing into the engine.

KIA SEPHIA (1996)

Showing 2 out of 2 Posts
Question From STEPHEN ROARK on KIA SEPHIA (1996)

PLEASE HELP ME CHECK ENGINE LIGHT WAS ON THE CODES READ O2 SENSOR AND CRANKSHAFT SENSOR PUT THEM BOTH ON AS WELL AS TUNED UP THE CAR WAS DRIVIN AND IT CUT OFF AND IT WILL TURN OVER LIKE CRAZY BUT WONT START ?HOW DOES CRANKSHAFT SENSOR GET POWER CAUSE NOT SHOWIN THAT THE SENSOR HAS POWER

Response From dave284 Top Rated Answer

The crankshaft sensor sends a signal back to the computer to let it know when the piston is at the right position to fire the spark plug.

kia fuel filter

Showing 2 out of 4 Posts | Show 2 Hidden Posts
Question From ritasguy1954 on kia fuel filter

we have a 2001 Kia Sephia 4 cyl 1.8 L 151,000 miles
I need to know where the fuel filter is at, so i can change it
Thanx

Response From ritasguy1954 Top Rated Answer

ok gang, back with more questions...got the filter replaced ok, now i'm getting a check engine about o2 sensor. i know it has 2, but where do they hide... all i've found so far is wonderfully detailed "before cat. converter or after cat. converter"
any hints how far before or behind it?
thanx again

Response From Hammer Time

That does not mean that the sensor is bad. What is the exact code number?

Response From Sidom

It's in the back of the car by the tank.....Right side if I'm not mistaken