Honda Odyssey 2016–2018 — technical service bulletin
Bulletin A19-072 · NHTSA communication 10169980 · issued Dec 20, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2018
model years
4
vehicle entries
Official summary
"Service Bulletin - The MIL comes on with DTC P0430 (front bank catalyst system efficiency below threshold [bank 2]). Additionally, one or more of the following DTCs may be stored: - P030X (misfire) - P219A (air-fuel ratio variation of cylinder [bank 1, rear bank]) - P219B (air-fuel ratio variation of cylinder [bank 2, front bank])"
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.