TSB ATS-180604 — Honda Service bulletin

ATS-180604 is a service bulletin on file with NHTSA for 3 Honda models, 2005–2008 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. 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,…

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

1Document filed
3Vehicles named
4Model years

Vehicles and model years ATS-180604 names

VehicleModel years
Honda Accord 2006, 2007
Honda CR-V 2005, 2006
Honda Element 2007, 2008

Every document filed under ATS-180604

Document IDFiledType
ATS 180604 June 14, 2018 Service bulletin

What ATS-180604 covers

Transmission & drivetrain — the component vocabulary NHTSA files this communication under.

← All Honda Accord TSB years TSB lookup by model

Questions buyers ask

What is TSB ATS-180604?

ATS-180604 is a service bulletin filed with NHTSA by Honda, covering 3 Honda models across the 2005–2008 model years. NHTSA's summary reads: 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,…

Which vehicles does ATS-180604 cover?

NHTSA's file names Honda Accord (2006–2007); Honda CR-V (2005–2006); Honda Element (2007–2008). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

Is TSB ATS-180604 a recall, and is the repair free?

No. ATS-180604 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

How do I get the full text of ATS-180604?

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under ATS-180604, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under ATS-180604. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.