# P0300 on the 2016 Ram 3500

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 P0300

- [10230344](https://open.wenmarpro.com/bulletins/10230344), 2023-01-17: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) with the latest available software. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs: P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P1C54 \- SCR NOx Catalyst Missing. P229F \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 2. P207F \- Reductant Quality Performance. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P2201 \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 1. P202E \- \(Diesel Exhaust Fluid\) Reductant Injector Performance. P0300 \- Multiple Cylinder Misfire. 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. P249E \- Closed Loop SCR Reductant Injection Control At Limit \- Flow Too High. P0128 \- Thermostat Rationality. P218F \- Reductant No Flow Detected. U0001\-00 \- CAN C BUS. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P1451 \- Diesel Particulate Filter System Performance. P229E \- NOx Sensor Circuit \- Bank 1 Sensor 2. P0218 \- Transmission High Temperature Operation Activated \(68RFE Only\). P0868 \- Line Pressure Low, MIL Action \(68RFE Only\). U110E \- Lost Ambient Temperature Message. P205E \- \(Diesel Exhaust Fluid\) Reductant Tank Temperature Sensor Circuit Intermittent \(setting when the block heater is plugged in\). The following DTCs have been changed from a one trip fault to a two trip fault:P0421 \- Catalyst 1 Efficiency Below Threshold Bank 1. P2280 \- Air Flow Restriction / Leak Between Air Cleaner And MAF. P203C \- \(Diesel Exhaust Fluid\) Reductant Level Sensor Circuit Low. P208D \- \(Diesel Exhaust Fluid\) Reductant Pump Control Circuit High. In addition to addressing the above DTCs,
- [10230332](https://open.wenmarpro.com/bulletins/10230332), 2023-01-17: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) with the latest available software. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs. P0401 \- EGR System Performance. P2281 \- Air Leak Between MAF and Throttle Body. P0402 \- Egr Flow Excessive Detected. P0234 \- Turbocharger Overboost Condition. P049D \- Egr Control Position Exceeded Learning Limit. P040B \- Exhaust Gas Recirculation Temperature Sensor "A" Circuit Performance. P064F \- Unauthorized Software/Calibration Detected. P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P1C54 \- SCR NOx Catalyst Missing. P229F \-Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 2. P207F \- Reductant Quality Performance. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P2201 \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 1. P202E \- \(Diesel Exhaust Fluid\) Reductant Injector Performance. P0300 \- Multiple Cylinder Misfire. 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. P249E \- Closed Loop SCR Reductant Injection Control At Limit \- Flow Too High. P0128 \- Thermostat Rationality. P218F \- Reductant No Flow Detected. U0001\-00 \- CAN C BUS. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P1451 \- Diesel Particulate Filter System Performance. P229E \- NOx Sensor Circuit \- Bank 1 Sensor 2. P0218 \- Transmission High Temperature Operation Activated \(68RFE Only\). P0868 \- Line Pressure Low, MIL Action \(68RFE Only\). U110E \- Lost Ambient Temperature Message. P205E \- \(Diesel Exhaust Fluid\) Reductant Tank Temperature Sensor Circuit Intermittent \(setting when the block heater is plugged in\).
- [10223808](https://open.wenmarpro.com/bulletins/10223808), 2022-10-17: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) with the latest available software. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs: P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P1C54 \- SCR NOx Catalyst Missing. P229F \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 2. P207F \- Reductant Quality Performance. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P2201 \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 1. P202E \- \(Diesel Exhaust Fluid\) Reductant Injector Performance. P0300 \- Multiple Cylinder Misfire. 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. P249E \- Closed Loop SCR Reductant Injection Control At Limit \- Flow Too High. P0128 \- Thermostat Rationality. P218F \- Reductant No Flow Detected. U0001\-00 \- CAN C BUS. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P1451 \- Diesel Particulate Filter System Performance. P229E \- NOx Sensor Circuit \- Bank 1 Sensor 2. P0218 \- Transmission High Temperature Operation Activated \(68RFE Only\). P0868 \- Line Pressure Low, MIL Action \(68RFE Only\). U110E \- Lost Ambient Temperature Message. P205E \- \(Diesel Exhaust Fluid\) Reductant Tank Temperature Sensor Circuit Intermittent \(setting when the block heater is plugged in\). The following DTCs have been changed from a one trip fault to a two trip fault:P0421 \- Catalyst 1 Efficiency Below Threshold Bank 1. P2280 \- Air Flow Restriction / Leak Between Air Cleaner And MAF. P203C \- \(Diesel Exhaust Fluid\) Reductant Level Sensor Circuit Low.
- [10223796](https://open.wenmarpro.com/bulletins/10223796), 2022-10-17: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) with the latest available software. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs. P0401 \- EGR System Performance. P2281 \- Air Leak Between MAF and Throttle Body. P0402 \- Egr Flow Excessive Detected. P0234 \- Turbocharger Overboost Condition. P049D \- Egr Control Position Exceeded Learning Limit. P040B \- Exhaust Gas Recirculation Temperature Sensor "A" Circuit Performance. P064F \- Unauthorized Software/Calibration Detected. P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P1C54 \- SCR NOx Catalyst Missing. P229F \-Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 2. P207F \- Reductant Quality Performance. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P2201 \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 1. P202E \- \(Diesel Exhaust Fluid\) Reductant Injector Performance. P0300 \- Multiple Cylinder Misfire. 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. P249E \- Closed Loop SCR Reductant Injection Control At Limit \- Flow Too High. P0128 \- Thermostat Rationality. P218F \- Reductant No Flow Detected. U0001\-00 \- CAN C BUS. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P1451 \- Diesel Particulate Filter System Performance. P229E \- NOx Sensor Circuit \- Bank 1 Sensor 2. P0218 \- Transmission High Temperature Operation Activated \(68RFE Only\). P0868 \- Line Pressure Low, MIL Action \(68RFE Only\). U110E \- Lost Ambient Temperature Message. P205E \- \(Diesel Exhaust Fluid\) Reductant Tank Temperature Sensor Circuit Intermittent \(setting when the block heater is plugged in\).
- [10220620](https://open.wenmarpro.com/bulletins/10220620), 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. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs.P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P1C54 \- SCR NOx Catalyst Missing. P229F \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 2. P207F \- Reductant Quality Performance. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P2201 \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 1. P202E \- \(Diesel Exhaust Fluid\) Reductant Injector Performance. P0300 \- Multiple Cylinder Misfire. 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. P249E \- Closed Loop SCR Reductant Injection Control At Limit \- Flow Too High. P0401 \- EGR System Performance. P0128 \- Thermostat Rationality. P218F \- Reductant No Flow Detected. U0001\-00 \- CAN C BUS. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P1451 \- Diesel Particulate Filter System Performance. P229E \- NOx Sensor Circuit \- Bank 1 Sensor 2. P2281 \- Air Leak Between MAF and Throttle Body. P0218 \- Transmission High Temperature Operation Activated \(68RFE Only\). P0868 \- Line Pressure Low, MIL Action \(68RFE Only\). U110E \- Lost Ambient Temperature Message. P205E \- \(Diesel Exhaust Fluid\) Reductant Tank Temperature Sensor Circuit Intermittent \(setting when the block heater is plugged in\). The following Diagnostic Trouble Codes \(DTCs\) have been changed from a one trip fault to a two trip fault:P0421 \- Catalyst 1 Efficiency Below Threshold Bank 1. P2280 \- Air Flow Restriction / Leak Between Air Cleaner And MAF. P203C \- \(Diesel Exhaust Fluid\) Reductant Level Sensor Circuit Low.
- [10188824](https://open.wenmarpro.com/bulletins/10188824), 2021-03-15: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module \(ECM/PCM\) with the latest available software. The customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following DTCs.P20EE \- SCR NOx Catalyst Efficiency Below Threshold \- Bank 1. P1C54 \- SCR NOx Catalyst Missing. P229F \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 2. P207F \- Reductant Quality Performance. P2002 \- Diesel Particulate Filter Efficiency Below Threshold. P2201 \- Aftertreatment NOx Sensor Circuit Performance \- Bank 1 Sensor 1. P202E \- \(Diesel Exhaust Fluid\) Reductant Injector Performance. P0300 \- Multiple Cylinder Misfire. 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. P249E \- Closed Loop SCR Reductant Injection Control At Limit \- Flow Too High. P0401 \- EGR System Performance. P0128 \- Thermostat Rationality. P218F \- Reductant No Flow Detected. U0001\-00 \- CAN C BUS. P24A5 \- EGR Cooler Bypass Bank 1 Control Stuck. P1451 \- Diesel Particulate Filter System Performance. P229E \- NOx Sensor Circuit \- Bank 1 Sensor 2. P2281 \- Air Leak Between MAF and Throttle Body. P0218 \- Transmission High Temperature Operation Activated \(68RFE Only\). P0868 \- Line Pressure Low, MIL Action \(68RFE Only\). U110E \- Lost Ambient Temperature Message. P205E \- \(Diesel Exhaust Fluid\) Reductant Tank Temperature Sensor Circuit Intermittent \(setting when the block heater is plugged in\). The following Diagnostic Trouble Codes \(DTCs\) have been changed from a one trip fault to a two trip fault:P0421 \- Catalyst 1 Efficiency Below Threshold Bank 1. P2280 \- Air Flow Restriction / Leak Between Air Cleaner And MAF. P203C \- \(Diesel Exhaust Fluid\) Reductant Level Sensor Circuit Low.
- [10121736](https://open.wenmarpro.com/bulletins/10121736), 2017-11-03: High Pressure Connector Tube/Fuel Injector For 2016 6.7 Cummins \- When replacing Fuel Injector for a Misfire Code \(P0300\- P0306\), please also replace the High Pressure Connector Tube and return tube with the injectors.