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Registered
Join Date: Sep 2023
Posts: 1
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e46 secondary air reset
2001 e46 300cic, 135K miles. won’t pass secondary air. everything is fine. Vehicle runs well (for it’s age). No fault codes whatsoever. pre-cat O2 sensors replaced at 95K miles (8 years ago!). Any trouble shooting ideas? As there are no fault codes, not sure where to start. The internet suggests that “lazy” o2 sensors could be the issue.
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09-12-2023, 04:50 PM
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