Jeep Grand Cherokee 2011–2013 — technical service bulletin
Bulletin 08-008-15 · NHTSA communication 10148595 · issued Jan 23, 2015
Technical service bulletin
communication type
Engine and Engine Cooling
component
2011–2013
model years
3
vehicle entries
Official summary
Flash: DTC P0405 / P0406 - MIL Light On This bulletin involves reprogramming the Engine Control Module (ECM) with new software. A small number of customers may report the MIL light is on. On further inspection Diagnostic Trouble Code (DTC), P0405 - EGR POSITION SENSOR CIRCUIT LOW and/or P0406 - EGR POSITION SENSOR CIRCUIT HIGH may be found.
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.