HONDA
ATS 180604
Manufacturer communications
- Publication date
- 2018-06-14
- Received by NHTSA
- 2018-07-02
- NHTSA record numbers
- 10142447
Manufacturer summary
Original wording in English
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.
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Honda
P2271secondary HO2S [sensor 2] circuit signal stuck richCheck vehicle applicability
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