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Chris, Shop Foreman
Category: Jeep
Satisfied Customers: 3347
Experience:  Jeep Certified Master Tech
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Jeep Grand Cher 1997 5.2 code 0138 down stream, have changed

Customer Question

jeep Grand Cher 1997 5.2 code 0138 down stream , have changed 3 times after 3mo 0138 again used OEM product
Submitted: 1 year ago.
Category: Jeep
Expert:  AZTechBrian replied 1 year ago.

Hello. A very possible cause of this code is a shorted oxygen sensor wire. I would first suggest looking over all the wiring for a damaged and shorted wire. Look in the connector very good too. Please let me know what you come up with.