{"nhtsa_id":10159903,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-05-20","date":"2015-11-04","document_id":"18-002-15 REV A","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN","mfr_system":null,"summary":"Flash: Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with updated software. During normal diagnostics a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) present: ? P3426 - Cylinder 4 Deactivation Control Performance. ? P3402 - Cylinder 1 Deactivation Control Performance. ? P3442 - Cylinder 6 Deactivation Control Performance. ? P3450 - Cylinder 7 Deactivation Control Performance. ? U0140 - Lost Communication With Body Control Module. (Attempting to clear this DTC will be unsuccessful.) ? P030X - Cylinder X Misfire Detected. ? P0300 - Multiple Cylinder Misfire Detected. Additionally the following enhancements have been implemented: ? Improved Cruise Control Acceleration mode. ? Improved Multi Displacement System operation. 6-Speed Automatic 66RFE transmission (Sales Code DFP). ? Multi Displacement System function improved while in stationary mode. 6-Speed Auto Aisin AS66RC transmission (Sales Code DF3). ? Potential small improvement in fuel economy at higher altitudes. ? Potential improvement in high altitude engine idle RPM stability.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10159903-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10159903-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10159903","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":["P0300","P3402","P3426","P3442","P3450","U0140"],"topics":[],"vehicles":[{"make":"RAM","model":"2500","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_ram_2500"]},{"make":"RAM","model":"3500","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_ram_3500"]},{"make":"RAM","model":"4500","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_ram_4500"]},{"make":"RAM","model":"5500","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_ram_5500"]}],"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":[]}