Toyota Camry 2018 — technical service bulletin
Bulletin K0A_Dealer Lette · NHTSA communication 10158587 · issued Mar 14, 2019
Technical service bulletin
communication type
Electrical System
component
2018
model years
4
vehicle entries
Official summary
Dealer Letter: The engine ECUs in the subject vehicles are equipped with software to monitor the rear oxygen sensors. Under a specific condition, this software may not detect a malfunctioning sensor due to an error in the software. As a result, affected vehicles do not meet certain onboard diagnostic (OBD) regulations.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.