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2000 Chrysler 300 Trouble Code P0140

Tiny
LOGANKEVIN123
  • MEMBER
  • 2000 CHRYSLER 300
  • 3.5L
  • V6
  • FWD
  • AUTOMATIC
  • 273,000 MILES
I had got engine trouble code P0140 and P0160.
I changed 2 oxygen sensors(I think my car has 2 total) with a Denso Brand new sensor

The above two codes dissappeared and now P0140 code has returned
Sunday, October 12th, 2014 AT 12:26 PM

6 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Usually with a v6 there is 4 two upstream one for each bank and one for each after the cat down stream. Where were the sensors you changed?Facing the engine right left side?In the exhaust manifold down by the cat?
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Sunday, October 12th, 2014 AT 3:23 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Just checked there is four like I said.
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Sunday, October 12th, 2014 AT 3:26 PM
Tiny
LOGANKEVIN123
  • MEMBER
  • 5 POSTS
Hi,

I had purchased 4 sensors to replace all 4. However my mechanic
Told me that the car has 2 oxygen sensors only. So the two sensors which are each on either side of the engine visible from top view were changed.

I kept insisting that there are 2 more sensors to be changed
but couldn't indicate the location myself as neither my mechanic nor me knows the location.

So the 2 remaining oxygen sensors are still with me. We just don't know where the downstream sensors are located as we looked and looked but couldn't find the location of the downstream sensors.

I have seen a diagram view online that pertains to show
2 downstream sensors but my car doesn't seem to show them.
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Sunday, October 12th, 2014 AT 6:02 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
P0140 is bank 1 sensor 2 thats the down stream one says its the right hand side passenger side located right behind the catalytic convertor. It should be there.
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Sunday, October 12th, 2014 AT 7:28 PM
Tiny
LOGANKEVIN123
  • MEMBER
  • 5 POSTS
Do u on have a diagram to indicate the location of both downstream sensors
I will print and show it to the mechanic as he keeps insisting the car has 2 sensors total
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Sunday, October 12th, 2014 AT 8:39 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
I posted the only diagram my online repair info shows its not a good diagram of where the sensor is.I would get another person to work on your car there has to be a down stream sensor. You just follow the pipe down its by your cat. If they work on cars for a living they should be able to find it.
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Sunday, October 12th, 2014 AT 9:18 PM

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