Po138 Engine Code Jeep

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Q&A: Jeep Cherokee P0138 Code - Causes, Symptoms & Solutions

I'm getting a po138 code in my 1999 jeep grand cherokee laredo. 4.0 Code p0138 locating oxygen sensors- bank 1 sensors 1&2 jeep cherokee I have a code po138 o2 sensor high volts bank 1 sensor 2. which o2

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