{"nhtsa_id":10136856,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-05-21","date":"2013-05-17","document_id":"21-005-13","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10136856-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10136856-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10136856","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0730"],"topics":[],"vehicles":[{"make":"CHRYSLER","model":"300C","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_chrysler_300"]},{"make":"DODGE","model":"CHALLENGER","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_dodge_challenger"]},{"make":"DODGE","model":"CHARGER","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_dodge_charger"]},{"make":"DODGE","model":"DURANGO","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_dodge_durango"]},{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_jeep_grand-cherokee"]},{"make":"JEEP","model":"WRANGLER","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_jeep_wrangler"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}