Acura TSB #BTS180603

2008 Acura TSX

TSB Document:

Affected Component: ELECTRICAL SYSTEM

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.

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Date Published
JUN 14, 2018
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