Nissan Sentra 2020–2022 — technical service bulletin
Bulletin NTB22-067 · NHTSA communication 10218654 · issued Jul 29, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020–2022
model years
3
vehicle entries
Official summary
MIL ON WITH DTC P0401 AND/OR P0404 STORED IN THE ECM IF YOU CONFIRM The MIL is ON and DTC P0401 (EGR A FLOW INSUFFICIENT) and/or P0404 (EGR A CONTROL) is stored in the ECM. AND There are no drivability concerns. ACTION 1. Confirm the current ECM part number. 2. Reprogram the ECM, if applicable.
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.