Jeep Gladiator 2020–2021 — technical service bulletin
Bulletin S2025000006 · NHTSA communication 10229283 · issued Jul 2, 2020
Technical service bulletin
communication type
Back Over Prevention
component
2020–2021
model years
4
vehicle entries
Official summary
Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P206D ? Reductant Quality Sensor Circuit High Set.
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.