Engine light still on after replacing oxygen sensor

Tiny
JEFF SUPPLICE
  • MEMBER
  • 2011 HYUNDAI SONATA
  • 1.4L
  • 4 CYL
  • TURBO
  • AWD
  • 668,702 MILES
My engine light still on but I just put new oxygen sensor. What I can do now?
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Monday, November 7th, 2016 AT 6:31 PM

35 Replies

Tiny
JIS001
  • EXPERT
What code did you pull and which oxygen sensor you replace?
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Monday, November 7th, 2016 AT 6:55 PM
Tiny
JEFF SUPPLICE
  • MEMBER
Is was p0036.
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Monday, November 7th, 2016 AT 7:55 PM
Tiny
JEFF SUPPLICE
  • MEMBER
Oxygen sensor bank 1 or 2 sensor.
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Monday, November 7th, 2016 AT 8:02 PM
Tiny
JIS001
  • EXPERT
I am still not sure which oxygen sensor you replaced? I attached an image to show you the correct location of the sensor. Bank 1 sensor 2 is the one on the catalytic converter. Depending on your emissions rating which you will find under the hood on the label the pin configurations are different.

On pins number three and four measure the resistance for the heater circuit. If it is not within spec replace the sensor. And as stated earlier depends on your emissions rating, pins number three or number number will be the power supply. With the key on engine off you should see battery voltage to one of those pins. Let us know how your test goes and if you had to replace the oxygen sensor on the catalytic converter.
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Monday, November 7th, 2016 AT 9:12 PM
Tiny
JEFF SUPPLICE
  • MEMBER
What do you mean off you should see battery voltage to one of those pins. Let us know how your test?
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Tuesday, November 8th, 2016 AT 3:37 AM
Tiny
JIS001
  • EXPERT
Depending on which connector you have based on the diagram back probe pin number three or number four with your voltmeter and have someone turn the key on and verify there is at least 12 volts.
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Tuesday, November 8th, 2016 AT 7:56 AM
Tiny
JEFF SUPPLICE
  • MEMBER
Oh okay, but this morning I drove my car so check engine light when off by itself. So I hope it has worked.
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Tuesday, November 8th, 2016 AT 1:35 PM
Tiny
SATURNTECH9
  • EXPERT
It sounds like you never cleared the code in the computer after you replaced the o2 sensor?
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Tuesday, November 8th, 2016 AT 1:55 PM
Tiny
JEFF SUPPLICE
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Yeah I did.
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Tuesday, November 8th, 2016 AT 2:16 PM
Tiny
SATURNTECH9
  • EXPERT
Okay, so see if the code comes back now that the light is off. What was the location of the sensor you replaced?
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Tuesday, November 8th, 2016 AT 2:23 PM
Tiny
JEFF SUPPLICE
  • MEMBER
Is was bottom of my car oxygen sensor bank 1 or 2 sensor because that is what people keep telling me so I changed it.
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Tuesday, November 8th, 2016 AT 4:42 PM
Tiny
SATURNTECH9
  • EXPERT
So the one by your catalytic converter?
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Tuesday, November 8th, 2016 AT 5:59 PM
Tiny
SATURNTECH9
  • EXPERT
Also, what size engine do you have?
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Tuesday, November 8th, 2016 AT 6:03 PM
Tiny
JEFF SUPPLICE
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Catalytic converter yeah. My size engine is 2.4L.
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Wednesday, November 9th, 2016 AT 4:03 PM
Tiny
SATURNTECH9
  • EXPERT
If it was by the catalytic converter it is the correct one you changed.
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Thursday, November 10th, 2016 AT 12:50 PM
Tiny
JEFF SUPPLICE
  • MEMBER
Yes.
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Saturday, November 12th, 2016 AT 3:32 AM
Tiny
KEN
  • ADMIN
Please let us know happens so it will help others.

Best, Ken
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Saturday, November 12th, 2016 AT 12:51 PM
Tiny
JEFF SUPPLICE
  • MEMBER
Okay thanks. I will.
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Sunday, November 13th, 2016 AT 9:09 AM
Tiny
JEFF SUPPLICE
  • MEMBER
Hey, I have another questions I when to pass my emissions test well I did not pass they told I have drive put like 50or 100 mill on. But I do not know what to do, no light light engine on the paper said I failed. Hey, how are you have that problem too I want to know what it is. I can get done to fix my problem koer fail emissions test.
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Thursday, November 17th, 2016 AT 5:03 AM
Tiny
JEFF SUPPLICE
  • MEMBER
You see then pictures I send for you to see.
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Thursday, November 17th, 2016 AT 5:05 AM

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