2002 dodge durango slt 4x4 P0138

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10-28-2013, 04:41 PM

emti66

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2002 dodge durango slt 4x4 P0138

I got this code that popped up p0138 i know its an o2 sensor but i need to know which one before or after the cat,i checked the one after the cat and looks clean no black residue like if it was bad

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10-28-2013, 04:58 PM

00DakDan

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Hi,

I moved your post to a new thread. The other one was 6 years old.

P0138 is a 1/2 O2 sensor shorted to voltage. That's the drivers side (cylinder #1 side) downstream O2.

What engine do you have?

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