# P0300 on the 2020 Ram 1500

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

- [11030229](https://open.wenmarpro.com/bulletins/11030229), 2026-03-25: 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 \(DTCs\): ● \*\*P0111\-00 \- Intake Air Temperature Sensor 1 Circuit Range Performance Bank 1. \(In Active or Stored status\) ● P0071\-00 \- Ambient Air Temperature Sensor Performance. \(In Active or Stored status\) ● P0072\-00 \- Ambient Air Temperature Sensor Circuit "A" Low. \(In Active or Stored status\) ● P0073\-00 \- Ambient Air Temperature Sensor Circuit "A" High. \(In Active or Stored status\) ● P0011\-00 \- Bank 1 Camshaft 1 Position Timing Over Advanced Or. \(In Active or Stored status\) ● P25E4\-00 \- B Camshaft Position \- Unable To Achieve Locked Position Bank 1. \(In Active or Stored status\) ● P05BD\-00 \- Stop\-Start Mode Switch Range/Performance. \(In Active or Stored status\) ● P0116\-00 \- Engine Coolant Temperature Sensor 1 Performance. \(In Active or Stored status\) ● P062B\-00 \- Internal Control Module Fuel Injector Control Performance. \(In Active or Stored status\) ● P0604\-00 \- Internal Control Module Random Access Memory Ram Error. \(In Active or Stored status\) ● P060C\-00 \- Internal Control Module Main Processor Performance. \(In Active or Stored status\)\*\* ● P018B\-00 \- Fuel Pressure Sensor "B" Circuit Range/performance. \*\*\(In Active or Stored status\)\*\* ● P1CEA\-00 \- Boost Side EVAP Purge System Performance. \*\*\(In Active or Stored status\)\*\* ● P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/Stuck Off. \*\*\(In Active or Stored status\)\*\* ● P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking. \*\*\(In Active or Stored status\)\*\* ● P0300\-00 \- Multiple Cylinder Misfire. \*\*\(In Active or Stored status\)\*\* Customers may also experience one or more of the following: ● \*\*Oil Level High Warning in the Instrument Panel Cluster \(IPC\).\*\* ● Fully Autonomous Parking Assist \(FAPA\) is not deactivated when accelerator pedal is pressed. ● Vehicle is not heating up fast enough at freezi
- [10239855](https://open.wenmarpro.com/bulletins/10239855), 2023-07-31: PSU right intake camshaft Case 1\) If you are to flash the PSU \(Pentastar Upgrade Engine\) PCM due to P0300 code presence, only AB or previous LEVEL PSU right intake camshaft PN 05047913AA or AB \(old version\) should be replaced. If the engine is equipped with the AC/AD LEVEL PSU right intake camshaft PN 05047913AC or AD \(new version\), camshaft should NOT be replaced. Case 2\) If the intake camshaft or intake rocker arm has excessive wear on the high lift profile \(Rocker arm: slider, Camshaft: central lobe\), replace the intake camshaft \(1\) in that cylinder head and all intake rocker arms \(6\).
- [10231770](https://open.wenmarpro.com/bulletins/10231770), 2023-02-13: Flash: Powertrain Control Module \(PCM\) Updates 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: \*\*P2183 \- Engine Coolant Temperature Sensor 2 Circuit Performance. P016F \- Closed Loop Fuel Pressure Control At Limit \- Pressure Too Low. P025C \- Fuel Pump Module Control Circuit Low. P208B \- Reductant Pump 1 Control Performance. P0403\-00 \- EGR Control Circuit Open ? Disabled Fault.\*\* P225D\-00 \- NOX Sensor 1/1 Performance Signal Stuck Low. P249C\-00 \- Excessive Time To Enter Closed Loop Reductant Injection Control. P065A \- Generator System Performance. P00F4\-00 \- Humidity Sensor Circuit Low. P20FB\-00 \- Reductant Pump 2 Control Performance. P200A\-00 \- Intake Manifold Runner Performance Bank 1. P200B\-00 \- Intake Manifold Runner Performance Bank 2. P2610 \- PCM Internal Engine Off Timer Performance. P015E \- Excessive Time to Enter Closed Loop Fuel Timing Control. P0534\-00 \- AC Refrigerant System A Charge Loss. P26FB\-00 \- EGR Cooler Bypass Control Stuck Closed Bank 1. P04DB\-00 \- Crankcase Ventilation System Disconnected. P204F\-00 \- Reductant System Performance. P2D2D\-00 \- Cold Start Intake Manifold Runner Performance Bank 1. P2D2E\-00 \- Cold Start Intake Manifold Runner Performance Bank 2. P2199\-00 \- Intake Air Temperature Sensor 1/2 Correlation. P22FA\-00 \- NOX Sensor Performance Slow Response High To Low Bank 1 Sensor 1. P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold. P0087\-00 \- Fuel Rail Pressure Too Low. P0128\-00 \- Thermostat Rationality \(additional software enhancement\). P0300\-00 \- Multiple Cylinder Misfire \(cold ambient temperature\). P0301\-00 \- Cylinder 1 Misfire \(cold ambient temperature\). P0302\-00 \- Cylinder 2 Misfire \(cold ambient temperature\). P0303\-00 \- Cylinder 3 Misfire \(cold ambient temperature\). P0304\-00 \- Cylinder 4 Misfire \(cold ambient temperature\). P0305\-00 \- Cylinder 5 Misfire \(cold amb
- [10230117](https://open.wenmarpro.com/bulletins/10230117), 2023-01-17: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the 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: P225D\-00 \- Nox Sensor 1/1 Performance \- Signal Stuck Low. P249C\-00 \- Excessive Time to Enter Closed Loop Reductant Injection Control. P065A \- Generator System Performance. P00F4\-00 \- Humidity Sensor Circuit Low. Improved VGT cleaning to reduce false failures for P00AF field issue. P0106\-00 \- Manifold Absolute Pressure Sensor Performance. P20FB\-00 \- Reductant Pump 2 Control Performance. P200A\-00 \- Intake Manifold Runner Performance \- Bank 1. P200B\-00 \- Intake Manifold Runner Performance \- Bank 2. P2610 \- PCM Internal Engine Off Timer Performance. Change DTC number from P0101\-00 to P0109\-00 \- Mass Air Flow Sensor Performance. P015E \- Excessive Time to Enter Closed Loop Fuel Timing Control. P0534\-00 \- AC Refrigerant System A Charge Loss. P26FB\-00 \- EGR Cooler Bypass Control Stuck Closed Bank 1. P04DB\-00 \- Crankcase Ventilation System Disconnected. P204F\-00 \- Reductant System Performance. P2D2D\-00 \- Cold Start Intake Manifold Runner Performance Bank 1. P2D2E\-00 \- Cold Start Intake Manifold Runner Performance Bank 2. P2199\-00 \- Intake Air Temperature Sensor 1 / 2 Correlation. P22FA\-00 \- NOX Sensor Performance \- Slow Response High to Low Bank 1 Sensor 1. P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold. P0087\-00 \- Fuel Rail Pressure Too Low. P0128\-00 \- Thermostat Rationality \(additional software enhancement\). P0300\-00 \- Multiple Cylinder Misfire \(cold ambient temperature\). P0301\-00 \- Cylinder 1 Misfire \(cold ambient temperature\). P0302\-00 \- Cylinder 2 Misfire \(cold ambient temperature\). P0303\-00 \- Cylinder 3 Misfire \(cold ambient temperature\). P0304\-00 \- Cylinder 4 Misfire \(cold ambient temperature\). P0305\-00 \- Cylinder 5 Misfire .
- [10223493](https://open.wenmarpro.com/bulletins/10223493), 2022-10-17: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the 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: P225D\-00 \- Nox Sensor 1/1 Performance \- Signal Stuck Low. P249C\-00 \- Excessive Time To Enter Closed Loop Reductant Injection Control. P065A \- Generator System Performance. P00F4\-00 \- Humidity Sensor Circuit Low. Improved VGT cleaning to reduce false failures for P00AF field issue. P0106\-00 \- Manifold Absolute Pressure Sensor Performance. P20FB\-00 \- Reductant Pump 2 Control Performance. P200A\-00 \- Intake Manifold Runner Performance \- Bank 1. P200B\-00 \- Intake Manifold Runner Performance \- Bank 2. P2610 \- PCM Internal Engine Off Timer Performance. Change DTC number from P0101\-00 to P0109\-00 \- Mass Air Flow Sensor Performance. P015E \- Excessive Time to Enter Closed Loop Fuel Timing Control. P0534\-00 \- AC Refrigerant System A Charge Loss. P26FB\-00 \- EGR Cooler Bypass Control Stuck Closed Bank 1. P04DB\-00 \- Crankcase Ventilation System Disconnected. P204F\-00 \- Reductant System Performance. P2D2D\-00 \- Cold Start Intake Manifold Runner Performance Bank 1. P2D2E\-00 \- Cold Start Intake Manifold Runner Performance Bank 2. P2199\-00 \- Intake Air Temperature Sensor 1 / 2 Correlation. P22FA\-00 \- NOX Sensor Performance \- Slow Response High To Low Bank 1 Sensor 1. P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold. P0087\-00 \- Fuel Rail Pressure Too Low. P0128\-00 \- Thermostat Rationality\(additional software enhancement\). P0300\-00 \- Multiple Cylinder Misfire\(cold ambient temperature\). P0301\-00 \- Cylinder 1 Misfire\(cold ambient temperature\). P0302\-00 \- Cylinder 2 Misfire\(cold ambient temperature\). P0303\-00 \- Cylinder 3 Misfire\(cold ambient temperature\). P0304\-00 \- Cylinder 4 Misfire\(cold ambient temperature\). P0305\-00 \- Cylinder 5 Misfire\(cold ambient temperature\).
- [10223345](https://open.wenmarpro.com/bulletins/10223345), 2022-10-17: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the 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: P225D\-00 \- Nox Sensor 1/1 Performance \- Signal Stuck Low. P249C\-00 \- Excessive Time To Enter Closed Loop Reductant Injection Control. P065A \- Generator System Performance. P00F4\-00 \- Humidity Sensor Circuit Low. Improved VGT cleaning to reduce false failures for P00AF field issue. P0106\-00 \- Manifold Absolute Pressure Sensor Performance. P20FB\-00 \- Reductant Pump 2 Control Performance. P200A\-00 \- Intake Manifold Runner Performance \- Bank 1. P200B\-00 \- Intake Manifold Runner Performance \- Bank 2. P2610 \- PCM Internal Engine Off Timer Performance. Change DTC number from P0101\-00 to P0109\-00 \- Mass Air Flow Sensor Performance. P015E \- Excessive Time to Enter Closed Loop Fuel Timing Control. P0534\-00 \- AC Refrigerant System A Charge Loss. P26FB\-00 \- EGR Cooler Bypass Control Stuck Closed Bank 1. P04DB\-00 \- Crankcase Ventilation System Disconnected. P204F\-00 \- Reductant System Performance. P2D2D\-00 \- Cold Start Intake Manifold Runner Performance Bank 1. P2D2E\-00 \- Cold Start Intake Manifold Runner Performance Bank 2. P2199\-00 \- Intake Air Temperature Sensor 1 / 2 Correlation. P22FA\-00 \- NOX Sensor Performance \- Slow Response High To Low Bank 1 Sensor 1. P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold. P0087\-00 \- Fuel Rail Pressure Too Low. P0128\-00 \- Thermostat Rationality\(additional software enhancement\). P0300\-00 \- Multiple Cylinder Misfire\(cold ambient temperature\). P0301\-00 \- Cylinder 1 Misfire\(cold ambient temperature\). P0302\-00 \- Cylinder 2 Misfire\(cold ambient temperature\). P0303\-00 \- Cylinder 3 Misfire\(cold ambient temperature\). P0304\-00 \- Cylinder 4 Misfire\(cold ambient temperature\). P0305\-00 \- Cylinder 5 Misfire\(cold ambient temperature\).
- [10220616](https://open.wenmarpro.com/bulletins/10220616), 2022-09-26: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the one or more of the following DTCs have been set:P0300 \- Multiple Cylinder Misfire. P0301 \- Cylinder 1 Misfire. P0302 \- Cylinder 2 Misfire. P0303 \- Cylinder 3 Misfire. P0304 \- Cylinder 4 Misfire. P0305 \- Cylinder 5 Misfire. P0306 \- Cylinder 6 Misfire. P0307 \- Cylinder 7 Misfire. P0308 \- Cylinder 8 Misfire. The customer may also experience one or more of the following:Rough idle/misfire only after cold start Auto Park system is unable to be manually over\-ridden after an Auto Park event. Auto Park disabled message will not display in cluster. ECO light does not illuminate in the cluster when Multiple Displacement System \(MDS\) is active\(EMEA, LATAM and APAC\). 2\-3 kph \(1.3\-1.9 mph\) difference between cruise set speed and the actual vehicle speed\(EMEA, LATAM and APAC\). Bump sensation during a coast down with light acceleration. Abnormal vibration when accelerating lightly during stop and go driving conditions.
- [10220589](https://open.wenmarpro.com/bulletins/10220589), 2022-09-26: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the followingDiagnostic Trouble Codes \(DTCs\) have been set:Change DTC number from P0101\-00 to P0109\-00 \- Mass Air Flow Sensor Performance. P015E \- Excessive Time to Enter Closed Loop Fuel Timing Control. P0534\-00 \- AC Refrigerant System A Charge Loss. P26FB\-00 \- EGR Cooler Bypass Control Stuck Closed Bank 1. P04DB\-00 \- Crankcase Ventilation System Disconnected. P204F\-00 \- Reductant System Performance. P200A\-00 \- Intake Manifold Runner Performance \- Bank 1. P200B\-00 \- Intake Manifold Runner Performance \- Bank 2. P2D2D\-00 \- Cold Start Intake Manifold Runner Performance Bank 1. P2D2E\-00 \- Cold Start Intake Manifold Runner Performance Bank 2. P2199\-00 \- Intake Air Temperature Sensor 1 / 2 Correlation. P22FA\-00 \- NOX Sensor Performance \- Slow Response High To Low Bank 1 Sensor 1. P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold. P0087\-00 \- Fuel Rail Pressure Too Low. P0128\-00 \- Thermostat Rationality\(additional software enhancement\). P0300\-00 \- Multiple Cylinder Misfire\(cold ambient temperature\). P0301\-00 \- Cylinder 1 Misfire\(cold ambient temperature\). P0302\-00 \- Cylinder 2 Misfire\(cold ambient temperature\). P0303\-00 \- Cylinder 3 Misfire\(cold ambient temperature\). P0304\-00 \- Cylinder 4 Misfire\(cold ambient temperature\). P0305\-00 \- Cylinder 5 Misfire\(cold ambient temperature\). P0306\-00 \- Cylinder 6 Misfire \(cold ambient temperature\). P01CB\-00 \- Cylinder 1 Injection Timing Performance \- Over Retarded. P01CC\-00 \- Cylinder 1 Injection Timing Performance \- Over Advanced. P01CD\-00 \- Cylinder 2 Injection Timing Performance \- Over Retarded. P01CE\-00 \- Cylinder 2 Injection Timing Performance \- Over Advanced. P01CF\-00 \- Cylinder 3 Injection Timing Performance \- Over Retarded.
- [10198439](https://open.wenmarpro.com/bulletins/10198439), 2021-06-28: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the 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: P225D\-00 \- Nox Sensor 1/1 Performance \- Signal Stuck Low. P249C\-00 \- Excessive Time To Enter Closed Loop Reductant Injection Control. P065A \- Generator System Performance. P00F4\-00 \- Humidity Sensor Circuit Low. Improved VGT cleaning to reduce false failures for P00AF field issue. P0106\-00 \- Manifold Absolute Pressure Sensor Performance. P20FB\-00 \- Reductant Pump 2 Control Performance. P200A\-00 \- Intake Manifold Runner Performance \- Bank 1. P200B\-00 \- Intake Manifold Runner Performance \- Bank 2. P2610 \- PCM Internal Engine Off Timer Performance. Change DTC number from P0101\-00 to P0109\-00 \- Mass Air Flow Sensor Performance. P015E \- Excessive Time to Enter Closed Loop Fuel Timing Control. P0534\-00 \- AC Refrigerant System A Charge Loss. P26FB\-00 \- EGR Cooler Bypass Control Stuck Closed Bank 1. P04DB\-00 \- Crankcase Ventilation System Disconnected. P204F\-00 \- Reductant System Performance. P2D2D\-00 \- Cold Start Intake Manifold Runner Performance Bank 1. P2D2E\-00 \- Cold Start Intake Manifold Runner Performance Bank 2. P2199\-00 \- Intake Air Temperature Sensor 1 / 2 Correlation. P22FA\-00 \- NOX Sensor Performance \- Slow Response High To Low Bank 1 Sensor 1. P2002\-00 \- Diesel Particulate Filter Efficiency Below Threshold. P0087\-00 \- Fuel Rail Pressure Too Low. P0128\-00 \- Thermostat Rationality\(additional software enhancement\). P0300\-00 \- Multiple Cylinder Misfire\(cold ambient temperature\). P0301\-00 \- Cylinder 1 Misfire\(cold ambient temperature\). P0302\-00 \- Cylinder 2 Misfire\(cold ambient temperature\). P0303\-00 \- Cylinder 3 Misfire\(cold ambient temperature\). P0304\-00 \- Cylinder 4 Misfire\(cold ambient temperature\). P0305\-00 \- Cylinder 5 Misfire\(cold ambient temperature\).
- [10188820](https://open.wenmarpro.com/bulletins/10188820), 2021-03-15: Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the one or more of the following DTCs have been set:P0300 \- Multiple Cylinder Misfire. P0301 \- Cylinder 1 Misfire. P0302 \- Cylinder 2 Misfire. P0303 \- Cylinder 3 Misfire. P0304 \- Cylinder 4 Misfire. P0305 \- Cylinder 5 Misfire. P0306 \- Cylinder 6 Misfire. P0307 \- Cylinder 7 Misfire. P0308 \- Cylinder 8 Misfire. The customer may also experience one or more of the following:Rough idle/misfire only after cold start Auto Park system is unable to be manually over\-ridden after an Auto Park event. Auto Park disabled message will not display in cluster. ECO light does not illuminate in the cluster when Multiple Displacement System \(MDS\) is active\(EMEA, LATAM and APAC\). 2\-3 kph \(1.3\-1.9 mph\) difference between cruise set speed and the actual vehicle speed\(EMEA, LATAM and APAC\). Bump sensation during a coast down with light acceleration. Abnormal vibration when accelerating lightly during stop and go driving conditions.