{"nhtsa_id":11029680,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-03-05","date":"2026-02-19","document_id":"18-025-26","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P2540-00 - Low Pressure Fuel System Sensor Circuit Range/Performance. ● P0506-00 - Idle Control System RPM - Lower Than Expected. ● P20CF-00 - Exhaust Aftertreatment Fuel Injector \"A\" Stuck Open. ● P20DB-00 - Exhaust Aftertreatment Fuel Supply Control Stuck Open. ● P040B-00 - EGR Temperature Sensor 1 Circuit Performance. ● U0109-00 - Lost Communication With Fuel Pump Control Module. ● P1451-00 - Diesel Particulate Filter System Performance. ● P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. ● P1191-00-Inlet Air Temperature Sensor Rational/Performance. ● P242F-00-Diesel Particulate Filter Restriction - Ash Accumulation. ● P229F-00 - NOX Sensor Circuit Range/Performance - Bank 1. ● P2281-00 - Air Leak Between MAF And Throttle Body.** ● P0087-00 - Fuel Rail Pressure Too Low. ● P2540-00 - Low Pressure Fuel System Sensor Circuit Range/Performance. ● P2543-00 - Low Pressure Fuel System Sensor Circuit Intermittent. ● P214D-00 - SCR NOx Catalyst Outlet Temperature Too High During Particulate Filter Regeneration. ● P242B-00 - Exhaust Gas Temperature Sensor Circuit Performance - Bank 1 Sensor 3. ● P24DA - Particulate Matter Sensor Exhaust Sample Error Bank 1. ● P20EE-00 - SCR NOx Catalyst Efficiency Below Threshold - Bank 1 Catalyst 1. ● P226C-00 - Turbocharger Boost Control \"A\" Slow Response. ● P2281-00 - Air Leak Between Maf And Throttle Body. ● P229F-00 - Nox Sensor Circuit Range/performance - Bank 1. ● P0100-00 - Mass Or Volume Air Flow Sensor \"A\" Circuit. ● P203F-00 - Reductant Level Too Low. ● P0423-00 - Heated Catalyst Efficiency Below Threshold Bank 1. ● P06B9-00 - Cylinder 1 Glow Plug Circuit Performance. ● P06BA-00 - Cylinder 2 Glow Plug Circuit Performance. ● P06BB-00 - Cylinder 3 Glow Plug Circuit Performance. ●","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029680-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029680-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11029680","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":["P0087","P0100","P040B","P0423","P0506","P06B9","P06BA","P06BB","P1191","P1451","P203F","P20CF","P20DB","P20EE","P214D","P226C","P2281","P229F","P242B","P242F","P2463","P24DA","P2540","P2543","U0109"],"topics":[],"vehicles":[{"make":"RAM","model":"2500","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_ram_2500"]},{"make":"RAM","model":"3500","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_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":[]}