Tech line summary article
Acura technical service bulletin BTS180603 for 2007-2008 Acura TSX.
- Bulletin number
- BTS180603
- Component
- Electrical system
- Summary
- Tech line summary article - Is the MIL on with DTC P2271 (secondary HO2S [sensor 2] circuit signal stuck rich)? What's likely causing this is the PCM is misinterpreting the A/F sensor (sensor 1) signals, causing the PCM to think that sensor 2 is stuck rich. To fix this issue, replace both sensors.
Owners of these vehicles have filed 7 complaints in the electrical category.
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