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1997 Mazda 626 with engine light code 171 system to lean bank 1 you have all ready changed both o2 sensors and cleaned the mass air flow sensor?
Wiki User
∙ 18y ago
Im still working on this, The PCM cannot correct this problem. The codes don't mean much to the average person. They give you an idea where to start looking. Maybe a bad fuel injecter, bad cam sensor etc.
Wiki User
∙ 18y ago
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