P1271 Nightmare - Nissan Forum
 
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post #1 of 4 Old Aug 7th, 2018, 11:54 AM Thread Starter
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P1271 Nightmare

2005 Nissan Altima throwing P1271 code.

I have replaced the o2 sensor and checked the fuse.

I was talking to a mechanic on justanswer who told me to test the terminal housing for slots 2 and 6 but wanted me to somehow test them while plugged in, which doesn't make any sense.

I tested the housing with the sensor unplugged (since there is seemingly no other way to access the parts to test with multimeter needles) and slots 2 and 6 read about 2.16-2.22.

EDIT: figured out backprobe. Need extensions.

Can anyone please tell me what to do at this point with the sensor not sending an electrical signal?


Last edited by lasor; Aug 7th, 2018 at 01:37 PM.
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post #2 of 4 Old Aug 7th, 2018, 12:53 PM Thread Starter
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This is what the terminal housing reads on the multi meter with engine running. I don't know how to test with it plugged in.
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post #3 of 4 Old Aug 7th, 2018, 12:58 PM Thread Starter
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This is the new sensor plugged in.
I'm assuming I place the multimeter needle through the back end.
I need to purchase an extension to do that.

When I get the backprobe extensions,
with the engine running,
what voltage should each wire read?

And if the voltage is low, what should I do?
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Last edited by lasor; Aug 7th, 2018 at 01:36 PM.
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post #4 of 4 Old Aug 7th, 2018, 01:11 PM Thread Starter
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I should also add that I've tried clearing the p1271 code but as soon as I drive for a few minutes the code comes back.
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