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Service bulletins for the 2020 Ram 4500

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.

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

About P2463 on the 2020 Ram 4500: 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: P2463 are shown. Show all

Bulletins, newest first
18055222022-10-17. Service bulletin. FUEL SYSTEM, DIESEL; POWER TRAIN; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / PowertrainControl Module (PCM) with the latest available software. Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or moreof the following Diagnostic Trouble Codes (DTCs) have been set: P0506-00-Idle Control System Rpm - Lower Than Expected. P0088 - Fuel Rail Pressure Too High - Bank 1(Sym Cam Only) P0607-00 - ECU Internal Performance. P20E8-00 - Reductant Pressure Too Low. P0301-00 - Cylinder 1 Misfire(Sym Cam Pump Only). P0302-00 - Cylinder 2 Misfire(Sym Cam Pump Only). P0303-00 - Cylinder 3 Misfire(Sym Cam Pump Only). P0304-00 - Cylinder 4 Misfire(Sym Cam Pump Only). P0305-00 - Cylinder 5 Misfire(Sym Cam Pump Only). P0306-00 - Cylinder 6 Misfire(Sym Cam Pump Only). P1C54-00 - SCR NOx Catalyst Missing. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation(68RFE Only). P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1(68RFE Only). P1451-00 - Diesel Particulate Filter System Performance(68RFE Only). P0299-00 - Turbocharger Underboost. P2706-00 - MS Solenoid Circuit (68RFE Only). P1D73-00 - AGS Performance. P061B - Internal Control Module Torque Calculation Performance. P064B-00 - PTO Control Module. The customer may also notice the following: PTO Customers: Allows E-Stop to work in any gear. PTO customers that use remote start: Prevents PTO cancellation in cabfrom disabling remote start. Harsh downshift clunk during exhaust brake deceleration. DEF gauge erratic when DEF level is low. Stall when putting in reverse in cold ambient temps. Engine stumble during engine warm up. Unstable idle when AC compressor cycles. Power Take Off (PTO) intermittently turns off with no DTCs. In addition the following software enhancements are included:Engine oil pressure switch modification. Oil Change Monitor Improvements For Severe Duty Operati
18055222022-09-26. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / PowertrainControl Module (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 moreof the following Diagnostic Trouble Codes (DTCs) have been set: P0506-00-Idle Control System Rpm - Lower Than Expected. P0088 - Fuel Rail Pressure Too High - Bank 1(Sym Cam Only) P0607-00 - ECU Internal Performance. P20E8-00 - Reductant Pressure Too Low. P0301-00 - Cylinder 1 Misfire(Sym Cam Pump Only). P0302-00 - Cylinder 2 Misfire(Sym Cam Pump Only). P0303-00 - Cylinder 3 Misfire(Sym Cam Pump Only). P0304-00 - Cylinder 4 Misfire(Sym Cam Pump Only). P0305-00 - Cylinder 5 Misfire(Sym Cam Pump Only). P0306-00 - Cylinder 6 Misfire(Sym Cam Pump Only). P1C54-00 - SCR NOx Catalyst Missing. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation(68RFE Only). P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1(68RFE Only). P1451-00 - Diesel Particulate Filter System Performance(68RFE Only). P0299-00 - Turbocharger Underboost. P2706-00 - MS Solenoid Circuit (68RFE Only). P1D73-00 - AGS Performance. P061B - Internal Control Module Torque Calculation Performance. P064B-00 - PTO Control Module. The customer may also notice the following: PTO Customers: Allows E-Stop to work in any gear. PTO customers that use remote start: Prevents PTO cancellation in cabfrom disabling remote start. Harsh downshift clunk during exhaust brake deceleration. DEF gauge erratic when DEF level is low. Stall when putting in reverse in cold ambient temps. Engine stumble during engine warm up. Unstable idle when AC compressor cycles. Power Take Off (PTO) intermittently turns off with no DTCs. In addition the following software enhancements are included:Engine oil pressure switch modification.
18015212022-09-26. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM; POWER TRAIN; BACK OVER PREVENTION; EXTERIOR LIGHTING; FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / Powertrain Control Module (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:P20E8-00 - Reductant Pressure Too Low. P0301-00 - Cylinder 1 Misfire(Sym Cam Pump Only). P0302-00 - Cylinder 2 Misfire(Sym Cam Pump Only). P0303-00 - Cylinder 3 Misfire(Sym Cam Pump Only). P0304-00 - Cylinder 4 Misfire(Sym Cam Pump Only). P0305-00 - Cylinder 5 Misfire(Sym Cam Pump Only). P0306-00 - Cylinder 6 Misfire(Sym Cam Pump Only). P1C54-00 - SCR NOx Catalyst Missing. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation(68RFE Only). P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1(68RFE Only). P1451-00 - Diesel Particulate Filter System Performance(68RFE Only). P0299-00 - Turbocharger Underboost. P2706-00 - MS Solenoid Circuit (68RFE Only). P1D73-00 - AGS Performance. P061B - Internal Control Module Torque Calculation Performance. P064B-00 - PTO Control Module. The customer may also notice the following:Harsh downshift clunk during exhaust brake deceleration. DEF gauge erratic when DEF level is low. Stall when putting in reverse in cold ambient temps. Engine stumble during engine warm up. Unstable idle when AC compressor cycles. Power Take Off (PTO) intermittently turns off with no DTCs. In addition the following software enhancements are included:Oil Change Monitor Improvements For Severe Duty Operation. System Improvement for PTO operation. wiTECH Mass Air Flow (MAF) data parameter improvement. Enabling wiTECH Particulate Matter (PM) Sensor Regeneration Test in PCM ?Misc Functions?. Active Grille Shutter (AGS) quality enhancements.
18-015-212022-08-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; BACK OVER PREVENTION; FUEL SYSTEM, DIESEL; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING; ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / Powertrain Control Module (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: P0607-00 - ECU Internal Performance. P20E8-00 - Reductant Pressure Too Low. P0301-00 - Cylinder 1 Misfire(Sym Cam Pump Only). P0302-00 - Cylinder 2 Misfire(Sym Cam Pump Only). P0303-00 - Cylinder 3 Misfire(Sym Cam Pump Only). P0304-00 - Cylinder 4 Misfire(Sym Cam Pump Only). P0305-00 - Cylinder 5 Misfire(Sym Cam Pump Only). P0306-00 - Cylinder 6 Misfire(Sym Cam Pump Only). P1C54-00 - SCR NOx Catalyst Missing. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation(68RFE Only). P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1(68RFE Only). P1451-00 - Diesel Particulate Filter System Performance(68RFE Only). P0299-00 - Turbocharger Underboost. P2706-00 - MS Solenoid Circuit (68RFE Only). P1D73-00 - AGS Performance. P061B - Internal Control Module Torque Calculation Performance. P064B-00 - PTO Control Module. The customer may also notice the following: Harsh downshift clunk during exhaust brake deceleration. DEF gauge erratic when DEF level is low. Stall when putting in reverse in cold ambient temps. Engine stumble during engine warm up. Unstable idle when AC compressor cycles. Power Take Off (PTO) intermittently turns off with no DTCs. In addition the following software enhancements are included: Engine oil pressure switch modification. Oil Change Monitor Improvements For Severe Duty Operation. System Improvement for PTO operation. wiTECH Mass Air Flow (MAF) data parameter improvement. Enabling wiTECH Particulate Matter (PM) Sensor Regeneration Test in PCM ?Misc Functions?. Active Grille Shutter (AGS) quality enhancements.
18-055-222022-06-27. Service bulletin. BACK OVER PREVENTION; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); FUEL SYSTEM, GASOLINE; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, DIESEL; EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / Powertrain Control Module (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: P0506-00-Idle Control System RPM - Lower Than Expected. P0088 - Fuel Rail Pressure Too High - Bank 1. P0607-00 - ECU Internal Performance. P20E8-00 - Reductant Pressure Too Low. P0301-00 - Cylinder 1 Misfire. P0302-00 - Cylinder 2 Misfire. P0303-00 - Cylinder 3 Misfire. P0304-00 - Cylinder 4 Misfire. P0305-00 - Cylinder 5 Misfire. P0306-00 - Cylinder 6 Misfire. P1C54-00 - SCR NOx Catalyst Missing. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation(68RFE Only). P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1(68RFE Only). P1451-00 - Diesel Particulate Filter System Performance(68RFE Only). P0299-00 - Turbocharger Underboost. P2706-00 - MS Solenoid Circuit (68RFE Only). P1D73-00 - AGS Performance. P061B - Internal Control Module Torque Calculation Performance. P064B-00 - PTO Control Module. The customer may also notice the following:PTO Customers: Allows E-Stop to work in any gear. PTO customers that use remote start: Prevents PTO cancellation in cab from disabling remote start. Harsh downshift clunk during exhaust brake deceleration. DEF gauge erratic when DEF level is low. Stall when putting in reverse in cold ambient temps. Engine stumble during engine warm up. Unstable idle when AC compressor cycles. Power Take Off (PTO) intermittently turns off with no DTCs. In addition the following software enhancements are included:Engine oil pressure switch modification. Oil Change Monitor Improvements For Severe Duty Operation. System Improvement for PTO operation. wiTECH Mass Air Flow (MAF) data parameter improvement.
18055222022-05-31. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / PowertrainControl Module (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 moreof the following Diagnostic Trouble Codes (DTCs) have been set: P0506-00-Idle Control System Rpm - Lower Than Expected. P0088 - Fuel Rail Pressure Too High - Bank 1(Sym Cam Only) P0607-00 - ECU Internal Performance. P20E8-00 - Reductant Pressure Too Low. P0301-00 - Cylinder 1 Misfire(Sym Cam Pump Only). P0302-00 - Cylinder 2 Misfire(Sym Cam Pump Only). P0303-00 - Cylinder 3 Misfire(Sym Cam Pump Only). P0304-00 - Cylinder 4 Misfire(Sym Cam Pump Only). P0305-00 - Cylinder 5 Misfire(Sym Cam Pump Only). P0306-00 - Cylinder 6 Misfire(Sym Cam Pump Only). P1C54-00 - SCR NOx Catalyst Missing. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation(68RFE Only). P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1(68RFE Only). P1451-00 - Diesel Particulate Filter System Performance(68RFE Only). P0299-00 - Turbocharger Underboost. P2706-00 - MS Solenoid Circuit (68RFE Only). P1D73-00 - AGS Performance. P061B - Internal Control Module Torque Calculation Performance. P064B-00 - PTO Control Module. The customer may also notice the following: PTO Customers: Allows E-Stop to work in any gear. PTO customers that use remote start: Prevents PTO cancellation in cabfrom disabling remote start. Harsh downshift clunk during exhaust brake deceleration. DEF gauge erratic when DEF level is low. Stall when putting in reverse in cold ambient temps. Engine stumble during engine warm up. Unstable idle when AC compressor cycles. Power Take Off (PTO) intermittently turns off with no DTCs. In addition the following software enhancements are included:Engine oil pressure switch modification. Oil Change Monitor Improvements For Severe Duty Ope
18-015-212021-03-15. Service bulletin. POWER TRAIN. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module (ECM) / Powertrain Control Module (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:P20E8-00 - Reductant Pressure Too Low. P0301-00 - Cylinder 1 Misfire(Sym Cam Pump Only). P0302-00 - Cylinder 2 Misfire(Sym Cam Pump Only). P0303-00 - Cylinder 3 Misfire(Sym Cam Pump Only). P0304-00 - Cylinder 4 Misfire(Sym Cam Pump Only). P0305-00 - Cylinder 5 Misfire(Sym Cam Pump Only). P0306-00 - Cylinder 6 Misfire(Sym Cam Pump Only). P1C54-00 - SCR NOx Catalyst Missing. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation(68RFE Only). P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1(68RFE Only). P1451-00 - Diesel Particulate Filter System Performance(68RFE Only). P0299-00 - Turbocharger Underboost. P2706-00 - MS Solenoid Circuit (68RFE Only). P1D73-00 - AGS Performance. P061B - Internal Control Module Torque Calculation Performance. P064B-00 - PTO Control Module. The customer may also notice the following:Harsh downshift clunk during exhaust brake deceleration. DEF gauge erratic when DEF level is low. Stall when putting in reverse in cold ambient temps. Engine stumble during engine warm up. Unstable idle when AC compressor cycles. Power Take Off (PTO) intermittently turns off with no DTCs. In addition the following software enhancements are included:Oil Change Monitor Improvements For Severe Duty Operation. System Improvement for PTO operation. wiTECH Mass Air Flow (MAF) data parameter improvement. Enabling wiTECH Particulate Matter (PM) Sensor Regeneration Test in PCM ?Misc Functions?. Active Grille Shutter (AGS) quality enhancements.

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