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Discussion Starter · #1 ·
Hi, I'm Paddle
Have a 2005 Tucson GLS with a 2.7L engine. It's throwing a P0139 code and changed the bank 1 downstream sensor and it came back on in 6 weeks.
Looking at changing all 4 O2 sensors, any recommendations on which brand to by. Looked like Bosch had some bad ratings. OEM is Kia sensors, is this the way to go???00000732
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