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Service bulletins for the 2026 Ram 3500

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.

240 on file from NHTSA, as of 2026-10-19.

About P208B on the 2026 Ram 3500: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: P208B are shown. Show all

Bulletins, newest first
18-067-26 REV. A2026-07-23. Service bulletin. POWER TRAIN. 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): ● P0088-00 - Fuel Rail Pressure Too High - Bank 1. ● P208B-00 - Reductant Pump 1 Control Performance. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
18-067-262026-07-18. Service bulletin. ENGINE; POWER TRAIN. 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): ● P0088-00 - Fuel Rail Pressure Too High - Bank 1. ● P208B-00 - Reductant Pump 1 Control Performance. ● 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. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
18-025-26 REV. B2026-07-18. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. 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): ● P0088-00 - Fuel Rail Pressure Too High - Bank 1. ● P208B-00 - Reductant Pump 1 Control Performance. ● 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. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
18-025-26 REV. A2026-05-28. Service bulletin. ENGINE. Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0088-00 - Fuel Rail Pressure Too High - Bank 1. ● P208B-00 - Reductant Pump 1 Control Performance.** ● 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. ● P06BC-00 - Cylinder 4 Glow Plug Circuit Performance. ● P06BD-00 - Cylinder 5 Glow Plug Circuit Performance. ● P06BE-00 - Cylinder 6 Glow Plug Circuit Performance. ● P020A-00 - Cylinder 1 Injection Timing. ● P0263-00 - Cylinder 1 Contribution/Balance. ● P0266-00 - Cylinder 2 Contribution/Balance. ● P0269-00 - Cylinder 3 Contribution/Balance. ● P0272-00 - Cylinder 4 Contribution/Balance. ● P0275-00 - Cylinder 5 Contribution/Balance. ● P0278-00 - Cylinder 6 Contribution/Balance. ● P026B-00 - Injection Timing Performance. Customers may experience one or more of the following: ● **An eventual 8 kph (5 mph) vehicle speed derate if the issue does not selfheal.** ● Instrument Panel Cluster (IPC) related messages: ○ Desoot Required. ○ Soot Filter Nearly Full. ○ Exhaust Filter Full Power Reduced See Dealer. ● Long engine crank times, particularly after fuel filter change. ● Inverter drops out when shifting from park to drive. ● Diesel Exhaust Fluid level gauge inaccuracy. ● Poor cold start performance. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
S2625000001 REV.A2026-03-13. Service bulletin. ELECTRICAL SYSTEM. Active/Pending Diagnostic Trouble Code (DTC) P208B And/or P20E8 Setting In The Powertrain Control Module (PCM)
S26250000022026-03-05. Service bulletin. ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illuminated, Diagnostic Trouble Codes (DTCs) P208B, P2D1F, P218F, P202E, P2048, P20E8, Setting In The Powertrain Control Module (PCM)
S26250000012026-03-05. Service bulletin. ELECTRICAL SYSTEM. Active/Pending Diagnostic Trouble Code (DTC) P208B And/or P20E8 Setting In The Powertrain Control Module (PCM)
08-077-262026-03-05. Service bulletin. ELECTRICAL SYSTEM. Flash: Diesel Exhaust Fluid Control Unit (DCU) 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): ● **P20BC-00 - Reductant Suction Line Heater Control Circuit High. - in Active or Stored status. ● P202C-00 - Reductant Tank Heater Control Circuit High. - in Active or Stored status. ● P20E8-00 - Reductant Pressure Too Low. - in Active or Stored status. ● P209F-00 - Reductant Tank Heater Control Circuit Performance. - in Active or Stored status. ● P208B-00 - Reductant Pump 1 Control Performance. - in Active or Stored status.** Customers may also comment one or more the following: ● "Service Diesel Exhaust Fluid (DEF) System See Dealer" message in the Electronic Vehicle Information Center (EVIC). NOTE: This message will appear after the DEF pump fails to build pressure, a fault is set and the message continues to be displayed for 80 km (50 mi) of driving. ● "Speed Will Be Limited To 8 kph (5 mph)" message displayed in the EVIC. CAUTION! If the vehicle is not taken to the dealership BEFORE reaching 241 km (150 mi) from when the "Service Diesel Exhaust Fluid (DEF) System See Dealer" message is displayed, the vehicles speed will be limited to 8 kph (5 mph). ● Reduced acceleration from turbo. This bulletin reprogramming the DCU with the latest available software.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.