{"nhtsa_id":10139893,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-06-11","date":"2014-12-11","document_id":"18-072-14","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"Flash: Compressed Natural Gas (CNG) Powertrain Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. The following powertrain system improvements/enhancements are included in this software release. Software to prevent Malfunction Indicator Lamp (MIL) illumination with no defect found for Diagnostic Trouble Code (DTC) P0481 - Cooling Fan 2 Control Circuit/Open setting in the PCM. Harsh shift improvement when shifting from drive to reverse.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10139893-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10139893-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10139893","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":["P0481"],"topics":[],"vehicles":[{"make":"RAM","model":"2500","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_ram_2500"]}],"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":[]}