{"nhtsa_id":10176587,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-06-22","date":"2020-05-23","document_id":"18-048-20","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM; ENGINE","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P24A5-00 - EGR Cooler Bypass Bank 1 Control Stuck. P20EE-00 - NOx Catalyst Efficiency Below Threshold. P0299-00 - Turbocharger Underboost. P1451-00 - Diesel Particulate Filter System Performance. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation. P0420-00 - Catalyst System Efficiency Below Threshold Bank 1. P2002-00 - Diesel Particulate Filter Efficiency Below Threshold. P0191-00 - Fuel Rail Pressure Sensor Circuit Performance. P0461-00 - Fuel Level Sensor 1 Performance. P0401-00 - EGR System Performance. P208B-00 - Reductant Pump 1 Control Performance. The following improvements are also included in this update:Hydrocarbon Desorption Mode, will resume after key cycle. Engine stumble improvement, during engine warm up. Smoke improvement during highway driving and lower altitudes (sea level).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10176587-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10176587-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10176587","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"transmission-control-module","name":"Transmission control module","parent":"powertrain"}],"codes":["P0191","P0299","P0401","P0420","P0461","P1451","P2002","P208B","P20EE","P242F","P24A5"],"topics":[],"vehicles":[{"make":"RAM","model":"3500","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_ram_3500"]}],"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":[]}