Volkswagen Passat 2018 — technical service bulletin
Bulletin Circular 24EZ · NHTSA communication 10180051 · issued Sep 2, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018
model years
1
vehicle entries
Official summary
This action addresses an emissions system-related Engine-Off calculation error and improves the Oxygen Sensor Aging-Correction Factor. Neither concern has a direct impact to vehicle exhaust or evaporative emissions. However, either condition could affect proper operation of the Malfunction Indicator Lamp (MIL).
Vehicles covered
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.