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Service bulletins for the 2025 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.

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

About P208B on the 2025 Ram 3500: what the code means, and the bulletins and recalls about the same components.

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By component

By trouble code

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

Bulletins, newest first
18-014-26 REV. A2026-04-29. 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.** ● P20CF-00 - Exhaust After treatment Fuel Injector "A" Stuck Open. ● P20DB-00 - Exhaust After treatment Fuel Supply Control Stuck Open. ● 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. ● P2459-00 - Diesel Particulate Filter Regeneration Too Frequent. ● 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-00 - 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. ● 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. ● P020A-00 - Cylinder 1 Injection Timing. ● P020B-00 - Cylinder 2 Injection Timing. ● P020C-00 - Cylinder 3 Injection Timing. ● P020D-00 - Cylinder 4 Injection Timing. ● P020E-00 - Cylinder 5 Injection Timing. ● P020F-00 - Cylinder 6 Injection Timing. ● 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. Customers may also comment on one or more of the following: ● Long engine crank times, particularly after fuel filter change. ● Inverter drops out when shifting from P to D gears. ● Diesel Exhaust Fluid (DEF) level gauge slow to update after a refill. ● Poor cold start performance. ● Cruise control drops out/cancels on its own. ● Engine stumble, runs rough, or a slight lack of power. The following software enhancements are also available: ● Reduce the occurrence of false faults Diagnostic Trouble Codes (DTCs) P0300-00, **P0088-00** and P0315-00. ● Improved troubleshooting and repair accuracy for air handling components through APT test in wiTECH. ● DTC P1451-00 re-tune to reduce false faults. ● Improvements to allow DTC P2509-00 faults to be cleared with wiTECH. ● Adaptive Cruise Control (ACC) software fix to prevent cruise control dropouts. ● Engine stumble fix for improved drivability. ● Engine stall detection allowing DTC P032F-00 to clear after a power cycle. ● Allow multiple PROXI rewrites. ● Enable cold re-prime (DTC P208B-00 improvement) This bulletin involves inspecting and possibly reprogramming the Engine Control Module (ECM/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)
08-076-262026-03-05. 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.** ● P218F-00 - Reductant No Flow Detected. ● P249E-00 - Closed Loop SCR Reductant Injection Control At Limit - Flow Too High. **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 involves inspecting and possibly reprogramming the DCU with the latest available software.
18-009-262026-02-04. Service bulletin. ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates V2C 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): ● 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. ● 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. ● P020A-00 - Cylinder 1 Injection Timing. ● P020B-00 - Cylinder 2 Injection Timing. ● P020C-00 - Cylinder 3 Injection Timing. ● P020D-00 - Cylinder 4 Injection Timing. ● P020E-00 - Cylinder 5 Injection Timing. ● P020F-00 - Cylinder 6 Injection Timing. ● P0072-00 - Ambient Air Temperature Sensor Circuit "A" Low. ● 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. ● P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold - Bank 1 Catalyst 1. ● P203F-00 - Reductant Level Too Low. ● P2698-00 - Exhaust Aftertreatment Fuel Injector "A" Performance. ● P1C54-00 - SCR NOX Catalyst Missing. ● P056E-00 - Cold Start Turbocharger/Supercharger Boost Control "A" Performance. ● P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation. ● P1451-00 - Diesel Particulate Filter System Performance. M18 FSAR-TSB-6753 -2- ● P0234-00 - Turbocharger Overboost Condition. ● P20E8-00 - Reductant Pressure Too Low. ● P208B-00 - Reductant Pump 1 Control Performance. Customers may also comment on one or more of
18-021-25 REV. B2025-10-15. Service bulletin. UNKNOWN OR OTHER. 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): ● 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-00 - 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. ● 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. ● P020A-00 - Cylinder 1 Injection Timing. ● P020B-00 - Cylinder 2 Injection Timing. ● P020C-00 - Cylinder 3 Injection Timing. ● P020D-00 - Cylinder 4 Injection Timing. ● P020E-00 - Cylinder 5 Injection Timing. ● P020F-00 - Cylinder 6 Injection Timing. ● 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. Customers may also comment on one or more of the following: ● **Inverter drops out when shifting from P to D gears. ● Diesel Exhaust Fluid (DEF) level gauge slow to update after a refill. ● Poor cold start performance.** ● Cruise control drops out/cancels on its own. ● Engine stumble, runs rough, or a slight lack of power. The following software enhancements are also available: ● **Improved troubleshooting and repair accuracy for air handling components through APT test in WiTECH. ** ● Reduce the occurrence of false faults Diagnostic Trouble Codes (DTCs) P0300-00 and P0315-00. ● DTC P1451-00 re-tune to reduce false faults. ● Improvements to allow DTC P2509-00 faults to be cleared with wiTECH. ● Adaptive Cruise Control (ACC) software fix to prevent cruise control dropouts. ● Engine stumble fix for improved drivability. ● Engine stall detection allowing DTC P032F-00 to clear after a power cycle. ● Allow multiple PROXI rewrites. ● Enable cold re-prime (DTC P208B-00 improvement). This bulletin involves inspecting and possibly reprogramming the Engine Control Module (ECM/PCM) with the latest available software
18-075-25 REV. A2025-10-08. Service bulletin. POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **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. ● P020A - 00 Cylinder 1 Injection Timing. ● P020B - 00 Cylinder 2 Injection Timing. ● P020C - 00 Cylinder 3 Injection Timing. ● P020D - 00 Cylinder 4 Injection Timing. ● P020E - 00 Cylinder 5 Injection Timing. ● P020F - 00 Cylinder 6 Injection Timing. ● 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. ● P0072 - 00 Ambient Air Temperature Sensor Circuit "A" Low. ● 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. ● P20EE - 00 SCR NOX Catalyst Efficiency Below Threshold - Bank 1 Catalyst 1. ● P203F - 00 Reductant Level Too Low. ● P2698 - 00 Exhaust Aftertreatment Fuel Injector "A" Performance.** ● P1C54 - 00 SCR NOX Catalyst Missing. ● P056E - 00 Cold Start Turbocharger/Supercharger Boost Control "A" Performance. ● P242F - 00 Diesel Particulate Filter Restriction - Ash Accumulation. ● P1451 - 00 Diesel Particulate Filter System Performance. ● P0234 - 00 Turbocharger Overboost Condition. ● P20E8 - 00 Reductant Pressure Too Low. ● P208B - 00 Reductant Pump 1 Control Performance. Customers may also comment on one or more of the following: ● **Diesel Exhaust Fluid (DEF) level gauge inaccuracy. ● Poor cold start performance. ● Unable to initiate manual Diesel Particulate Filter (DPF) regen through EVIC.** ● Unable to engage Power Take-Off (PTO) in mobile condition while the vehicle is moving, but has no issue engaging PTO while the vehicle is stationary. ● Engine stalls under high PTO loads at high altitudes. ● PTO does not work during the split-shaft mode. ● Engine/Cab shake during engine shutdown. ● PTO light not blinking when PTO disengaged. ● Poor engine starting performance. ● DEF level gauge fluctuations. ● In cold conditions the engine automatically increases idle speed when in Park to help with warm-up. Once warmed up, it returns to normal idle speed. If the engine is cycling in and out of this elevated idle speed condition, the customer could complain that its not behaving properly. ● Poor alternator charging and battery life **This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.**
18-075-252025-08-06. Service bulletin. UNKNOWN OR OTHER. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1C54-00 - SCR NOX Catalyst Missing. ● P056E-00 - Cold Start Turbocharger/Supercharger Boost Control "A" Performance. ● P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation. ● P1451-00 - Diesel Particulate Filter System Performance. ● P0234-00 - Turbocharger Overboost Condition. ● P20E8-00 - Reductant Pressure Too Low. ● P208B-00 - Reductant Pump 1 Control Performance. Customers may also comment on one or more of the following: ● Unable to engage Power Take-Off (PTO) in mobile condition while the vehicle is moving, but has no issue engaging PTO while the vehicle is stationary. ● Engine stalls under high PTO loads at high altitudes. ● PTO does not work during the split-shaft mode. ● Engine/Cab shake during engine shutdown. ● PTO light not blinking when PTO disengaged. ● Poor engine starting performance. ● Diesel Exhaust Fluid (DEF) level gauge fluctuations. ● In cold conditions the engine automatically increases idle speed when in Park to help with warm-up. Once warmed up, it returns to normal idle speed. If the engine is cycling in and out of this elevated idle speed condition, the customer could complain that its not behaving properly. ● Poor alternator charging and battery life This bulletin involves reprogramming the PCM with the latest available software.
18-021-25 REV. A2025-05-20. Service bulletin. POWER TRAIN. "Flash: Powertrain Control Module (PCM) Updates Customers may comment on one or more of the following: ● Malfunction Indicator Lamp (MIL) or check engine light illuminated. ● Cruise control drops out/cancels on its own. ● Engine stumble, runs rough, or a slight lack of power. The following software enhancements are also available: ● Reduce the occurrence of false faults Diagnostic Trouble Codes (DTCs) P0300 and P0315. ● DTC P1451 re-tune to reduce false faults. ● Improvements to allow DTC P2509 faults to be cleared with wiTECH. ● Adaptive Cruise Control (ACC) software fix to prevent cruise control dropouts. ● Engine stumble fix for improved drivability. ● Engine stall detection allowing DTC P032F to clear after a power cycle. ● Allow multiple PROXI rewrites. ● Enable cold re-prime (DTC P208B improvement). This bulletin involves **inspecting and possibly** reprogramming the Engine Control Module (ECM/PCM) with the latest available software."
18-021-252025-04-23. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. "Flash: Powertrain Control Module (PCM) Updates Customers may comment on one or more of the following: ● Malfunction Indicator Lamp (MIL) or check engine light illuminated. ● Cruise control drops out/cancels on its own. ● Engine stumble, runs rough, or a slight lack of power. The following software enhancements are also available: ● Reduce the occurrence of false faults DTCs P0300 and P0315. ● DTC P1451 retune to reduce false faults. ● Improvements to allow DTC P2509 faults to be cleared with wiTECH. ● Adaptive Cruise Control (ACC) software fix to prevent cruise control dropouts. ● Engine stumble fix for improved drivability ● Engine stall detection allowing DTC P032F to clear after a power cycle. ● Allow multiple PROXI rewrites. ● Enable cold reprime (DTC P208B improvement). This bulletin involves reprogramming the Engine Control Module (ECM/PCM) with the latest available software"

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