{"nhtsa_id":10239980,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-07-31","date":"2023-05-26","document_id":"1806823","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN; EXTERIOR LIGHTING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates 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: ? P1404 - EGR Position Sensor Rationality Closed. ? P2457 - Exhaust Gas Recirculation Cooling System Performance. NOTE: P1404 - EGR Position Sensor Rationality Closed DTC can be erroneously set when P2457 -Exhaust Gas Recirculation Cooling System Performance DTC is set. In addition, the customer may notice one or more of the following conditions: ? **Power Take Off (PTO) disable to high engine oil temperature (DD DP with DF3 Only).** ? In PTO mode, transmission gear engagement is abrupt and idle speed is high when transitioning From Park To Drive/Reverse Gear. This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239980-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239980-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10239980","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"software","name":"Software","parent":"electrical"},{"id":"transmission-control-module","name":"Transmission control module","parent":"powertrain"}],"codes":["P1404","P2457"],"topics":[],"vehicles":[{"make":"RAM","model":"3500","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_ram_3500"]},{"make":"RAM","model":"4500","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_ram_4500"]},{"make":"RAM","model":"5500","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_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":[]}