Chrysler 300 2012 — technical service bulletin
Bulletin 21-005-13 · NHTSA communication 10215983 · issued May 17, 2013
Technical service bulletin
communication type
Power Train
component
2012
model years
6
vehicle entries
Official summary
FLASH: MIL Illumination For P0730 - Incorrect Gear Ratio This bulletin involves updating the Transmission Control Module (TCM) software. Customers may indicate that the MIL is illuminated and/or the transmission went into limp-in. Upon further investigation, Diagnostic Trouble Code (DTC) P0730 - Incorrect Gear Ratio is either active or stored in the PCM?s memory.
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.