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02 Sensor 2002 Grand Cherokee Bank 2 Sensor 1

Old 02-15-2016, 11:21 AM
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Default 02 Sensor 2002 Grand Cherokee Bank 2 Sensor 1

Hello, the error codes are "P0051" and "P0152", "Bank 2 Sensor 1"

I think this is up stream referring to "Sensor 1" but what does "Bank 2" refer to, front or rear of the manifold (While looking at front of car)? This is a straight 6. Does anyone know the Mopar part number and the NTK part number?

Thank you
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Old 02-15-2016, 11:36 AM
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Bank 2 is the rear 3 cylinders. Sensor 1 is upstream. Go with the NTK. Some suggest replacing the downstream as well because it uses the upstream for reference in determining cat efficiency
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Old 02-15-2016, 11:46 AM
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To the OP welcome to the forum!


If you will look at the sections closer there is a Grand Cherokee section that may be more helpful to you.
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Old 02-15-2016, 12:51 PM
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OK, so the sensor on the manifold closest to the firewall?


Originally Posted by CR-Snow View Post
Bank 2 is the rear 3 cylinders. Sensor 1 is upstream. Go with the NTK. Some suggest replacing the downstream as well because it uses the upstream for reference in determining cat efficiency
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Old 02-15-2016, 12:52 PM
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So, the sensor on the manifold closest to the firewall?
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Old 02-16-2016, 05:25 AM
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Bank 2 is closest to the firewall. Sensor 1 is closest to the head
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Old 02-16-2016, 03:50 PM
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IDK if this helps or not, but my 2000 4.0 with CA emissions doesn't seem to have downstream sensors, or at least none that I can find. There is one on each cat, but the pipe after that goes into a round can before the muffler with no electrical connections.
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Old 02-18-2016, 01:17 AM
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Originally Posted by CR-Snow View Post
Bank 2 is closest to the firewall. Sensor 1 is closest to the head
That worked, I used NTK part, the dealer part had to be ordered. I read some posts that people had good luck with NTK. The check engine light is off and it seems to work fine.

Thank you for your help.

Al
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