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Super Moderator
99 Kia Elan 1.8L, 17 Ford Edge Sport 2.7L V6, 15 Mustang 3.7L V6, 08 Harley Nightrain
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bank1 and bank2 upstream not working
OK, what have you checked so far?

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2019 Sportage 2.7L V6 SX turbo AWD




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2011 Forte SX 2.4L (thankfully MPI) A/T 144K miles
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1,179 Posts
I used to visit a forum which required that a post be 10 words or more, and that would have been really annoying for the OP of this thread to have to deal with. But OTOH, this was probably posted while the OP was driving, so best to keep it as short as possible.
 

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2019 Kia Sportage. SX with AWD. 2.0L Direct Injected Turbocharged & Intercooled Gas.
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217 Posts
Well, upstream might mean prior to converter, so you have a v6.
Pre O2 sensors are critical. They adjust fuel flow to each bank of cylinders.
If you don't replace them bad things will happen.
They are not cheap, but the R&R is easy with a special made socket you can rent at a parts store.
Be careful disconnecting the plug from the harness. The tabs break off sometimes.
O2 sensors don't last forever. Average life is 80K miles. Some more, some less.
Good luck! Let us know in 5 words or less how you make out!
 

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2019 Kia Sportage. SX with AWD. 2.0L Direct Injected Turbocharged & Intercooled Gas.
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217 Posts

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2006 kia sorento ex
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2 Posts
Discussion Starter #7
Well, upstream might mean prior to converter, so you have a v6.
Pre O2 sensors are critical. They adjust fuel flow to each bank of cylinders.
If you don't replace them bad things will happen.
They are not cheap, but the R&R is easy with a special made socket you can rent at a parts store.
Be careful disconnecting the plug from the harness. The tabs break off sometimes.
O2 sensors don't last forever. Average life is 80K miles. Some more, some less.
Good luck! Let us know in 5 words or less how you make out!
i have replaced both upstream sensor on my 2006 kia sorento v6 still will not read any upstream sensor
 

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2019 Kia Sportage. SX with AWD. 2.0L Direct Injected Turbocharged & Intercooled Gas.
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217 Posts
OK. You were careful removing the old sensors, correct? You were able to disconnect the connector from the harness without breaking any pins or clips, correct? You removed the plastic caps from the new sensors, correct? You did not remove the anti-seize lube from the sensor threads, and you did not get the never-seize on the sensor dome, correct? Then you connected the sensors back into the original locations on the harness, correct? Then you started your vehicle and a OBDII light came on and you threw a code that states "no upstream sensors present", correct? Try pulling the positive battery cable for 20 min or so to reset the system. Then try to start the vehicle again and see if the code returns. If it does and the vehicle is running fine you have two choices. 1. Do nothing, drive the car. 2. Take the vehicle into a shop, explain what happened, and pay for a diagnosis.
 
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