# P0301 on the 2020 Ram 2500

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0301

- [10229552](https://open.wenmarpro.com/bulletins/10229552), 2023-01-09: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain ControlModule \(ECM/PCM\) 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 \(DTCs\) have been set: P0506 \- Idle Control System RPM Lower Than Expected. P0299\-00 \- Turbocharger Underboost. P20EE\-00 \- NOx Catalyst Efficiency Below Threshold. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P1451\-00 \- Diesel Particulate Filter System Performance. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P026B \- Injection Timing Performance. 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. P2706\-00 \- MS Solenoid Circuit \(68RFE Only\). P1D73\-00 \- AGS Performance. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold\(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance\(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). The customer may also notice one or more of the following: Idle Instability. Harsh downshift clunk during exhaust brake deceleration. Diesel Exhaust Fluid \(DEF\) 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. Engine surge felt while driving\(Sales Code ETM\). Idle fluctuation.
- [10225404](https://open.wenmarpro.com/bulletins/10225404), 2022-10-31: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain ControlModule \(ECM/PCM\) 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 \(DTCs\) have been set: P0506 \- Idle Control System RPM Lower Than Expected. P0299\-00 \- Turbocharger Underboost. P20EE\-00 \- NOx Catalyst Efficiency Below Threshold. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P1451\-00 \- Diesel Particulate Filter System Performance. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P026B \- Injection Timing Performance. 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. P2706\-00 \- MS Solenoid Circuit \(68RFE Only\). P1D73\-00 \- AGS Performance. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold\(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance\(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). The customer may also notice one or more of the following: Idle Instability. Harsh downshift clunk during exhaust brake deceleration. Diesel Exhaust Fluid \(DEF\) 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. Engine surge felt while driving\(Sales Code ETM\). Idle fluctuation.
- [10225267](https://open.wenmarpro.com/bulletins/10225267), 2022-10-31: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain ControlModule \(ECM/PCM\) 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 \(DTCs\) have been set: P0506 \- Idle Control System RPM Lower Than Expected. P0299\-00 \- Turbocharger Underboost. P20EE\-00 \- NOx Catalyst Efficiency Below Threshold. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P1451\-00 \- Diesel Particulate Filter System Performance. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P026B \- Injection Timing Performance. 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. P2706\-00 \- MS Solenoid Circuit \(68RFE Only\). P1D73\-00 \- AGS Performance. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold\(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance\(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). The customer may also notice one or more of the following: Idle Instability. Harsh downshift clunk during exhaust brake deceleration. Diesel Exhaust Fluid \(DEF\) 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. Engine surge felt while driving\(Sales Code ETM\). Idle fluctuation.
- [10221350](https://open.wenmarpro.com/bulletins/10221350), 2022-09-26: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) 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 \(DTCs\) 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. P0299\-00 \- Turbocharger Underboost. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P1451\-00 \- Diesel Particulate Filter System Performance. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck\(Sales Code ETM\). P20EE\-00 \- NOx Catalyst Efficiency Below Threshold\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold\(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance\(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). The customer may also notice one or more of the following: Harsh downshift clunk
- [10220944](https://open.wenmarpro.com/bulletins/10220944), 2022-09-26: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) 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. P0299\-00 \- Turbocharger Underboost. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P1451\-00 \- Diesel Particulate Filter System Performance. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck \(Sales Code ETM\). P20EE\-00 \- NOx Catalyst Efficiency Below Threshold\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold \(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00
- [10220602](https://open.wenmarpro.com/bulletins/10220602), 2022-09-26: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) 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 Under boost. P2706\-00 \- MS Solenoid Circuit \(68RFE Only\). P1D73\-00 \- AGS Performance. P0299\-00 \- Turbocharger Under boost. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P1451\-00 \- Diesel Particulate Filter System Performance. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck\(Sales Code ETM\). P20EE\-00 \- NOx Catalyst Efficiency Below Threshold\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold\(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance \(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). Harsh downshift clunk during exhaust brake decal
- [10214635](https://open.wenmarpro.com/bulletins/10214635), 2022-06-27: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) 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 \(DTCs\) have been set: 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. P0299\-00 \- Turbocharger Underboost. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P1451\-00 \- Diesel Particulate Filter System Performance. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck\(Sales Code ETM\). P20EE\-00 \- NOx Catalyst Efficiency Below Threshold\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold\(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance\(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). The customer may also notice one or more of the following: Harsh downshift clunk during exhaust brake deceleration. Diesel Exhaust Fluid \(DEF\) gauge erratic when DEF level is low. Stall when putting in
- [10190691](https://open.wenmarpro.com/bulletins/10190691), 2021-04-26: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) 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. P0299\-00 \- Turbocharger Underboost. P2463\-00 \- Diesel Particulate Filter Restriction \- Soot Accumulation Bank 1. P1451\-00 \- Diesel Particulate Filter System Performance. P242F\-00 \- Diesel Particulate Filter Restriction \- Ash Accumulation. P24A5\-00 \- EGR Cooler Bypass Bank 1 Control Stuck \(Sales Code ETM\). P20EE\-00 \- NOx Catalyst Efficiency Below Threshold\(Sales Code ETM\). P0420\-00 \- Catalyst System Efficiency Below Threshold Bank 1\(Sales Code ETM\). P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold \(Sales Code ETM\). P0191\-00 \- Fuel Rail Pressure Sensor Circuit Performance\(Sales Code ETM\). P0461\-00 \- Fuel Level Sensor 1 Performance\(Sales Code ETM\). P0401\-00 \- EGR System Performance\(Sales Code ETM\). P208B\-00 \- Reductant Pump 1 Control Performance\(Sales Code ETM\). The customer may also notice one or more of the following:Harsh downshift clunk during exhaust brake