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Discussion Starter · #1 ·
I have a 2017 Niro. Two weeks ago the oil pressure light came on, then went off, came back on again for a few seconds and then went off again. I took it to my mechanic who found nothing wrong. He change the oil and filter. The same thing happened again a week later. the first time was in town, the second time was on the freeway at 70 mph. The dealer now will change the oil and filter again because they couldn't find any cause any suggestions?
 

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It would be interesting to know the oil change history of this vehicle.

A low oil level could cause the oil pump to cavitate and 'lose' pressure. A clogged oil filter could momentarily cause a dip in pressure but the bypass valve should immediately open.

A good mechanic would measure the oil pressure at different rpm's to see how the oil pump is performing- Check the oil pressure switch for operation and for any blockages in its mounting-evaluate the oil condition for any type of gunk. Also check the electrical connection.

They make troubleshooting devices where a mechanic can install an oil pressure monitor gauge that can be teed into the cars oil pressure loop and then the mechanic can actually monitor oil pressure as the car is being driven to evaluate the sensing system and the engines actual oil pressure under actual driving conditions.

https://www.amazon.com/DASBET-Engin...coding=UTF8&psc=1&refRID=9RCN9B2GXAR4CSPC5938

This is a more professional unit
 

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Discussion Starter · #3 ·
It would be interesting to know the oil change history of this vehicle.

A low oil level could cause the oil pump to cavitate and 'lose' pressure. A clogged oil filter could momentarily cause a dip in pressure but the bypass valve should immediately open.

A good mechanic would measure the oil pressure at different rpm's to see how the oil pump is performing- Check the oil pressure switch for operation and for any blockages in its mounting-evaluate the oil condition for any type of gunk. Also check the electrical connection.

They make troubleshooting devices where a mechanic can install an oil pressure monitor gauge that can be teed into the cars oil pressure loop and then the mechanic can actually monitor oil pressure as the car is being driven to evaluate the sensing system and the engines actual oil pressure under actual driving conditions.

https://www.amazon.com/DASBET-Engin...coding=UTF8&psc=1&refRID=9RCN9B2GXAR4CSPC5938
Thanks! i am presuming the dealer did all that. The oil has been changed on or just before the schedule. 47,000 on the car.
 

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I have a 2017 Niro. Two weeks ago the oil pressure light came on, then went off, came back on again for a few seconds and then went off again. I took it to my mechanic who found nothing wrong. He change the oil and filter. The same thing happened again a week later. the first time was in town, the second time was on the freeway at 70 mph. The dealer now will change the oil and filter again because they couldn't find any cause any suggestions?
If the light were to stay on for any appreciable amount of time and oil pressure was actually low, major damage could occur to the engine. The fact that the light came on and went off and you did not hear any loud noises from the engine makes me think it could be an oil pressure switch problem.
I assume the car is under powertrain warranty so if not diagnosed correctly, and major engine damage occurs, the manufacturer will have to cover the repair cost. It would be a small cost for them to replace the oil pressure switch and then monitor from that point. Changing oil is not going to solve the problem.
 

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Discussion Starter · #5 ·
If the light were to stay on for any appreciable amount of time and oil pressure was actually low, major damage could occur to the engine. The fact that the light came on and went off and you did not hear any loud noises from the engine makes me think it could be an oil pressure switch problem.
I assume the car is under powertrain warranty so if not diagnosed correctly, and major engine damage occurs, the manufacturer will have to cover the repair cost. It would be a small cost for them to replace the oil pressure switch and then monitor from that point. Changing oil is not going to solve the problem.
Thanks
 

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I have a 2017 Niro. Two weeks ago the oil pressure light came on, then went off, came back on again for a few seconds and then went off again. I took it to my mechanic who found nothing wrong. He change the oil and filter. The same thing happened again a week later. the first time was in town, the second time was on the freeway at 70 mph. The dealer now will change the oil and filter again because they couldn't find any cause any suggestions?
Years ago had similar symptoms on an old truck. turned out to be a sticking bypass valve. When engine revs up valve opens and sticks open. Pressure drops until valve unsticks.
 

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I have a 2017 Niro. Two weeks ago the oil pressure light came on, then went off, came back on again for a few seconds and then went off again. I took it to my mechanic who found nothing wrong. He change the oil and filter. The same thing happened again a week later. the first time was in town, the second time was on the freeway at 70 mph. The dealer now will change the oil and filter again because they couldn't find any cause any suggestions?
Hi - I have exactly the same problem on a 2016 Niro Hybrid , the oil pressure light is coming on Intermittently and at completely indeterminate times , however mostly just prior to the vehicle entering EV mode . Just wondering if your problem was resolved and what the fix was . Dealer changed oil and filter and found a connector problem on the oil sensor , however still got same issue , its back with dealer on Tuesday , if they resolve it I'll post an update .
 

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Hi - I have exactly the same problem on a 2016 Niro Hybrid , the oil pressure light is coming on Intermittently and at completely indeterminate times , however mostly just prior to the vehicle entering EV mode . Just wondering if your problem was resolved and what the fix was . Dealer changed oil and filter and found a connector problem on the oil sensor , however still got same issue , its back with dealer on Tuesday , if they resolve it I'll post an update .
My problem has been resolved, the dealer changed to Oil Pressure Switch , have done 200 miles since and all is OK now , hope this helps anyone else that gets this fault.
 

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My problem has been resolved, the dealer changed to Oil Pressure Switch , have done 200 miles since and all is OK now , hope this helps anyone else that gets this fault.
Thanks much for letting us all know how your problem was resolved. Too often people ask advise and then you never hear from them again. So thanks for keeping us updated and I'm glad you got your problem fixed.
 

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I have a 2017 Niro. Two weeks ago the oil pressure light came on, then went off, came back on again for a few seconds and then went off again. I took it to my mechanic who found nothing wrong. He change the oil and filter. The same thing happened again a week later. the first time was in town, the second time was on the freeway at 70 mph. The dealer now will change the oil and filter again because they couldn't find any cause any suggestions?
I'm new to the forum and am surprised to read this!
I had the exact same problem pop up with my 2017 Kia Niro LX just last month (May 2021). I tried an oil change to no avail although my oil changes have been super-regular so I doubted that problem. Then, I took it to the local Kia dealership but had to wait 3 weeks for an appointment so ditched the car and rented one to not cause (potential) further injury.
The dealer found a "small leak" to the tune of a $375 repair.
To note, my October 2017 Kia Niro LX has 185,000+ miles on it.
It's been wonderful up to this point.

I left it in NY and bought a new 2021 Kia Niro LX in FL.
I hate it!
The simple features they got rid of (no Sirius XM, no Keyless entry) were most important to me. The additional cost to get them factory prepared isn't worth it because I cannot use the other features well.

When I drive back to NY, I'm ditching this new car and taking my 2017 Kia Niro back into possession.
 

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I'm new to the forum and am surprised to read this!
I had the exact same problem pop up with my 2017 Kia Niro LX just last month (May 2021). I tried an oil change to no avail although my oil changes have been super-regular so I doubted that problem. Then, I took it to the local Kia dealership but had to wait 3 weeks for an appointment so ditched the car and rented one to not cause (potential) further injury.
The dealer found a "small leak" to the tune of a $375 repair.
To note, my October 2017 Kia Niro LX has 185,000+ miles on it.
It's been wonderful up to this point.

I left it in NY and bought a new 2021 Kia Niro LX in FL.
I hate it!
The simple features they got rid of (no Sirius XM, no Keyless entry) were most important to me. The additional cost to get them factory prepared isn't worth it because I cannot use the other features well.

When I drive back to NY, I'm ditching this new car and taking my 2017 Kia Niro back into possession.
Was there a big increase in price for the next level up ?
 

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I have a 2017 Niro. Two weeks ago the oil pressure light came on, then went off, came back on again for a few seconds and then went off again. I took it to my mechanic who found nothing wrong. He change the oil and filter. The same thing happened again a week later. the first time was in town, the second time was on the freeway at 70 mph. The dealer now will change the oil and filter again because they couldn't find any cause any suggestions?
Same here with my 2017 Niro LX. Turns out it was the oil pressure switch. Quick fix at my local imported car shop. $33 part from the dealership if you want to try it yourself.
 

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My 2017 FE just started this a few days ago. I’ve got 341,330 miles on it. This is the first issue with the engine. The oil light is intermittent. Sometimes the light will go out while accelerating and some trips nothing. The oil is full and engine temps are normal. Engine is smooth and feels normal. Hoping it’s just the sensor or connectors.
 

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My 2017 FE just started this a few days ago. I’ve got 341,330 miles on it. This is the first issue with the engine. The oil light is intermittent. Sometimes the light will go out while accelerating and some trips nothing. The oil is full and engine temps are normal. Engine is smooth and feels normal. Hoping it’s just the sensor or connectors.
That is a lot of miles. I would not be surprised if you have greater than "normal" clearance in crank and/or rod bearings from that mileage and the oil pressure is actually low at idle speed for that reason....doubt there is a cheap repair.
 

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My 2017 FE just started this a few days ago. I’ve got 341,330 miles on it. This is the first issue with the engine. The oil light is intermittent. Sometimes the light will go out while accelerating and some trips nothing. The oil is full and engine temps are normal. Engine is smooth and feels normal. Hoping it’s just the sensor or connectors.
Yes that is A LOT of miles. Since you have so many miles have your tried a heavier oil, like 5w-30 or even 10w-30?
 

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Yes that is A LOT of miles. Since you have so many miles have your tried a heavier oil, like 5w-30 or even 10w-30?
While 10W-30 might be thicker than 0W-20, it will not fill the clearance that is increasing in bearing surfaces and because oil passages are very small in today's engines, you may actually cause the system to be starved of oil and that will make the end result worse.
The oil pressure may actually increase and the light might stay out but if the engine is starved for oil (think thickening of arteries and heart attack) the engine will be toast sooner than you think.
 

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While 10W-30 might be thicker than 0W-20, it will not fill the clearance that is increasing in bearing surfaces and because oil passages are very small in today's engines, you may actually cause the system to be starved of oil and that will make the end result worse.
The oil pressure may actually increase and the light might stay out but if the engine is starved for oil (think thickening of arteries and heart attack) the engine will be toast sooner than you think.
Ok I sorta buy your argument but would say 5w-30 be that much thicker to be harmful. I believe in other countries it's an acceptable weight. I was thinking it would be a good experiment to see what happens. Long term you'd have to weigh the risks.
 

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Ok I sorta buy your argument but would say 5w-30 be that much thicker to be harmful. I believe in other countries it's an acceptable weight. I was thinking it would be a good experiment to see what happens. Long term you'd have to weigh the risks.
5W-30 would be acceptable and could be used as an experiment. Would not cause long term damage but also doubt it would make a difference - especially long term.
 

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Hi - I have exactly the same problem on a 2016 Niro Hybrid , the oil pressure light is coming on Intermittently and at completely indeterminate times , however mostly just prior to the vehicle entering EV mode . Just wondering if your problem was resolved and what the fix was . Dealer changed oil and filter and found a connector problem on the oil sensor , however still got same issue , its back with dealer on Tuesday , if they resolve it I'll post an update .
This has just started happening in my 2017 niro in the last couple of days. Just before it goes into EV mode...just checked the oil and it's still full but it is in need of an oil change, was hoping thats all it was...but now seeing this happening to so many others, im starting to worry ...I hope its nothing serious, I just bought it in the summer.
 

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This has just started happening in my 2017 niro in the last couple of days. Just before it goes into EV mode...just checked the oil and it's still full but it is in need of an oil change, was hoping thats all it was...but now seeing this happening to so many others, im starting to worry ...I hope its nothing serious, I just bought it in the summer.
How many miles on your car?
 
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