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1999 Pontiac Grand Prix Emissions control

Tiny
OURWORLDENTER
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 169,000 MILES
I am looking to locate the Bank 1 Sensor 1 to ensure that I install the right sensor.

There's two so which one needs to be replaced

P0135 code came on.
Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)


a picture would be great.
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Tuesday, April 7th, 2009 AT 12:29 AM

3 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
3.8L engine
can not find a picture to show the O2 sensors
put this should help


https://www.2carpros.com/forum/automotive_pictures/99387_Graphic2_140.jpg



bank one is the location of cylinder #1 and sensor 1 is the 1st before the cat
hope that help let me know
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Tuesday, April 7th, 2009 AT 6:27 AM
Tiny
OURWORLDENTER
  • MEMBER
  • 11 POSTS
I have a 3.1L engine and I just wanna make sure I am replacing the proper sensor.

Im ordering the pre cat sensor, right?

Is the diagram the same as the 3.8?
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Tuesday, April 7th, 2009 AT 10:44 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
3.1 is not the same


https://www.2carpros.com/forum/automotive_pictures/99387_Graphic2_141.jpg



https://www.2carpros.com/forum/automotive_pictures/99387_02_V6_11.jpg

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Tuesday, April 7th, 2009 AT 4:48 PM

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