# P0201 on the 2013 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 P0201

- [10221550](https://open.wenmarpro.com/bulletins/10221550), 2022-09-26: Flash: Powertrain Diagnostic And System Improvements This bulletin involves reprogramming the 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 the following Diagnostic Trouble Codes \(DTCs\) have been set. Several software improvements are available for the following conditions. The Following DTC has been changed from a two trip fault to a one trip fault: · U1A24 \- Lost Communication With Ammonia Sensor. Prevent or reduce MIL illumination when no defect is present for the following DTCs. These faults have been changed from a one trip fault to a two trip fault: · P0201 \- P0206 \- Fuel Injector X Circuit/Open. · P049D \- EGR Control Position Exceeding Learning Limit. · P0711 \- Transmission Temperature Sensor Performance. · P0712 \- Transmission Temperature Sensor Low. · P0713 \- Transmission Temperature Sensor High. · P0714 \- Transmission Temperature Sensor Intermittent. · P0740 \- TCC Out Of Range. · P0869 \- Line Pressure High. · P0933 \- Hydraulic Pressure Sensor Range/Performance. · P0934 \- Line Pressure Sensor Circuit Low. · P0935 \- Line Pressure Sensor Circuit High. · P1775 \- Solenoid Switch Valve Latched In TCC Position. · P1776 \- Solenoid Switch Valve Latched In LR Position. · U0100 \- Lost Communication With ECM/PCM. · U0002 \- CAN C Bus Off performance \- Bus Off. · \*\*P2281 \- Air Leak Between MAF And Throttle Body. · P218F \- Reductant No Flow Detected. · P242F \- Diesel Particulate Filter Restriction \- Ash Accumulation. · P20E8 \- \(Diesel Exhaust Fluid\) Reductant Pressure Too Low. · P202E \- Diesel Exhaust Fluid\) Reductant Injector Performance. · P209F \- Diesel Exhaust Fluid\) Reductant Tank Heater Control Circuit Performance. · P218F \- Reductant No Flow Detected.\*\* · P205E \- \(Diesel Exhaust Fluid\) Reductant Tank Temperatur
- [10221090](https://open.wenmarpro.com/bulletins/10221090), 2022-09-26: Flash: 6.7L Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel.Prevent Or Reduce Malfunction Indicator Lamp \(MIL\) Illumination When No Defect is Present For The Following Diagnostic Trouble Codes \(DTCs\). These Faults Have Been Changed From P0201 \- P0206 \- Fuel Injector X Circuit/Open. P049D \- EGR Control Position Exceeding Learning Limit. P0711 \- Transmission Temperature Sensor Performance. P0712 \- Transmission Temperature Sensor Low. P0713 \- Transmission Temperature Sensor High. P0714 \- Transmission Temperature Sensor Intermittent. P0740 \- TCC Out Of Range. P0869 \- Line Pressure High. P0933 \- Hydraulic Pressure Sensor Range/Performance. P0934 \- Line Pressure Sensor Circuit Low. P0935 \- Line Pressure Sensor Circuit High. P1775 \- Solenoid Switch Valve Latched In TCC Position. P1776 \- Solenoid Switch Valve Latched In LR Position. U0100 \- Lost Communication With ECM/PCM. U0002 \- CAN C Bus Off performance \- Bus Off. U110E \- Lost Ambient Temperature Message.The Following DTC Has Been Changed From A Two Trip Fault To One Trip Fault: U1A24 \- Lost Communication With Ammonia Sensor.Improvements To Prevent Or Reduce Malfunction Indicator Lamp \(MIL\) Illumination When No Defect Is Present For: U3017 \- Control Module Timer/Clock Performance. P026B \- Injection Timing Performance. P0128 \- Thermostat Rationality. In cold ambient temperatures. P0087 \- Fuel Rail Pressure Too Low. P2281 \- Air Leak Between MAF and Throttle Body. U1421 \- Implausible Ignition Key Off Time Received. P026A \- Charge Air Cooler Efficiency Below Threshold. P04DB \- Crankcase Ventilation System Disconnected. P0544 \- Exhaust Gas Temperature Sensor Circuit \- Bank 1 Sensor 1. P0562 \- Battery Voltage Low. P0604 \- Internal Control Module RAM Error. P1451 \- Diesel Particulate Filter
- [10218803](https://open.wenmarpro.com/bulletins/10218803), 2022-08-29: Flash: Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel. Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For The Following Transmission Faults. These Faults Are Currently Tripped As A One Trip Fault And Should Have Been A Two Trip Fault: ? P0201 \- P0206 \- FUEL INJECTOR X CIRCUIT/OPEN ? P049D \- EGR CONTROL POSITION EXCEEDED LEARNING LIMIT ? P0711 \- TRANSMISSION TEMPERATURE SENSOR PERFORMANCE ? P0712 \- TRANSMISSION TEMPERATURE SENSOR LOW ? P0713 \- TRANSMISSION TEMPERATURE SENSOR HIGH ? P0714 \- TRANSMISSION TEMPERATURE SENSOR INTERMITTENT ? P0740 \- TCC OUT OF RANGE ? P0869 \- LINE PRESSURE HIGH ? P0933 \- HYDRAULIC PRESSURE SENSOR RANGE/PERFORMANCE ? P0934 \- LINE PRESSURE SENSOR CIRCUIT LOW ? P0935 \- LINE PRESSURE SENSOR CIRCUIT HIGH ? P1775 \- SOLENOID SWITCH VALVE LATCHED IN TCC POSITION ? P1776 \- SOLENOID SWITCH VALVE LATCHED IN LR POSITION ? U0100 \- LOST COMMUNICATION WITH ECM/PCM ? U0002 \- CAN C BUS OFF PERFORMANCE \- BUS OFF ? U110E \- LOST AMBIENT TEMPERATURE MESSAGE Improvements To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For: ? P026A \- CHARGE AIR COOLER EFFICIENCY BELOW THRESHOLD ? P04DB \- CRANKCASE VENTILATION SYSTEM DISCONNECTED ? P0544 \- EXHAUST GAS TEMPERATURE SENSOR CIRCUIT \- BANK 1 SENSOR 1 ? P0562 \- BATTERY VOLTAGE LOW ? P0604 \- INTERNAL CONTROL MODULE RAM ERROR ? P1451 \- DIESEL PARTICULATE FILTER SYSTEM PERFORMANCE ? P20EE \- SCR NOx CATALYST EFFICIENCY BELOW THRESHOLD \- BANK 1 \(Additional software enhancements to prevent false MIL\) ? P202E \- \(DIESEL EXHAUST FLUID\) REDUCTANT INJECTOR PERFORMANCE ? P2201 \- AFTERTREATMENT NOx SENSOR CIRCUIT PERFORMANCE \- BANK 1 SENSOR 1 ? P2281 \- AIR LEAK BETWEEN MAF AND THROTTLE BODY ? P24A5 \- EGR COO
- [10218207](https://open.wenmarpro.com/bulletins/10218207), 2022-08-22: Flash: 6.7L Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel. Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For The Following Diagnostic Trouble Codes \(DTCs\). These Faults Are Currently Tripped As A One Trip Fault And Should Have Been A Two Trip Fault: ? P0201 \- P0206 \- Fuel Injector X Circuit/Open. ? P049D \- EGR Control Position Exceeding Learning Limit. ? P0711 \- Transmission Temperature Sensor Performance. ? P0712 \- Transmission Temperature Sensor Low. ? P0713 \- Transmission Temperature Sensor High. ? P0714 \- Transmission Temperature Sensor Intermittent. ? P0740 \- TCC Out Of Range. ? P0869 \- Line Pressure High. ? P0933 \- Hydraulic Pressure Sensor Range/Performance. ? P0934 \- Line Pressure Sensor Circuit Low. ? P0935 \- Line Pressure Sensor Circuit High. ? P1775 \- Solenoid Switch Valve Latched In TCC Position. ? P1776 \- Solenoid Switch Valve Latched In LR Position. ? U0100 \- Lost Communication With ECM/PCM. ? U0002 \- CAN C Bus Off performance \- Bus Off. ? U110E \- Lost Ambient Temperature Message. The Following DTC Has Been Changed From A Two Trip Fault To One Trip Fault: ? U1A24 \- Lost Communication With Ammonia Sensor. Improvements To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For: ? P026B \- Injection Timing Performance. ? P0128 \- Thermostat Rationality. In cold ambient temperatures. ? P0087 \- Fuel Rail Pressure Too Low. ? P2281 \- Air Leak Between MAF and Throttle Body. ? U3017 \- Control Module Timer/Clock Performance. ? U1421 \- Implausible Ignition Key Off Time Received. ? P026A \- Charge Air Cooler Efficiency Below Threshold. ? P04DB \- Crankcase Ventilation System Disconnected. ? P0544 \- Exhaust Gas Temperature Sensor Circuit \- Bank 1 Sensor
- [10217962](https://open.wenmarpro.com/bulletins/10217962), 2022-08-22: Flash: Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel. Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For The Following Transmission Faults. These Faults Are Currently Tripped As A One Trip Fault And Should Have Been A Two Trip Fault: ? P0201 \- P0206 \- FUEL INJECTOR X CIRCUIT/OPEN ? P049D \- EGR CONTROL POSITION EXCEEDED LEARNING LIMIT ? P0711 \- TRANSMISSION TEMPERATURE SENSOR PERFORMANCE ? P0712 \- TRANSMISSION TEMPERATURE SENSOR LOW ? P0713 \- TRANSMISSION TEMPERATURE SENSOR HIGH ? P0714 \- TRANSMISSION TEMPERATURE SENSOR INTERMITTENT ? P0740 \- TCC OUT OF RANGE ? P0869 \- LINE PRESSURE HIGH ? P0933 \- HYDRAULIC PRESSURE SENSOR RANGE/PERFORMANCE ? P0934 \- LINE PRESSURE SENSOR CIRCUIT LOW ? P0935 \- LINE PRESSURE SENSOR CIRCUIT HIGH ? P1775 \- SOLENOID SWITCH VALVE LATCHED IN TCC POSITION ? P1776 \- SOLENOID SWITCH VALVE LATCHED IN LR POSITION ? U0100 \- LOST COMMUNICATION WITH ECM/PCM ? U0002 \- CAN C BUS OFF PERFORMANCE \- BUS OFF ? U110E \- LOST AMBIENT TEMPERATURE MESSAGE Improvements To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For: ? P026A \- CHARGE AIR COOLER EFFICIENCY BELOW THRESHOLD ? P04DB \- CRANKCASE VENTILATION SYSTEM DISCONNECTED ? P0544 \- EXHAUST GAS TEMPERATURE SENSOR CIRCUIT \- BANK 1 SENSOR 1 ? P0562 \- BATTERY VOLTAGE LOW ? P0604 \- INTERNAL CONTROL MODULE RAM ERROR ? P1451 \- DIESEL PARTICULATE FILTER SYSTEM PERFORMANCE ? P20EE \- SCR NOx CATALYST EFFICIENCY BELOW THRESHOLD \- BANK 1 \(Additional software enhancements to prevent false MIL\) ? P202E \- \(DIESEL EXHAUST FLUID\) REDUCTANT INJECTOR PERFORMANCE ? P2201 \- AFTERTREATMENT NOx SENSOR CIRCUIT PERFORMANCE \- BANK 1 SENSOR 1 ? P2281 \- AIR LEAK BETWEEN MAF AND THROTTLE BODY ? P24A5 \- EGR COO
- [10159916](https://open.wenmarpro.com/bulletins/10159916), 2019-05-20: Flash: 6.7L Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Several software improvements are available for the following conditions. The Following DTC Has Been Changed From A Two Trip Fault To One Trip Fault: ? U1A24 \- Lost Communication With Ammonia Sensor. Prevent Or Reduce Malfunction Indicator Lamp \(MIL\) Illumination When No Defect is Present For The Following Diagnostic Trouble Codes \(DTCs\). These Faults Have Been Changed From A One Trip Fault To A Two Trip Fault: ? P0201 \- P0206 \- Fuel Injector X Circuit/Open. ? P049D \- EGR Control Position Exceeding Learning Limit. ? P0711 \- Transmission Temperature Sensor Performance. ? P0712 \- Transmission Temperature Sensor Low. ? P0713 \- Transmission Temperature Sensor High. ? P0714 \- Transmission Temperature Sensor Intermittent. ? P0740 \- TCC Out Of Range. ? P0869 \- Line Pressure High. ? P0933 \- Hydraulic Pressure Sensor Range/Performance. ? P0934 \- Line Pressure Sensor Circuit Low. ? P0935 \- Line Pressure Sensor Circuit High. ? P1775 \- Solenoid Switch Valve Latched In TCC Position. ? P1776 \- Solenoid Switch Valve Latched In LR Position. ? U0100 \- Lost Communication With ECM/PCM. ? U0002 \- CAN C Bus Off performance \- Bus Off. Improvements To Prevent Or Reduce Malfunction Indicator Lamp \(MIL\) Illumination When No Defect Is Present For: ? P205E \- \(Diesel Exhaust Fluid\) Reductant Tank Temperature Sensor Circuit Intermittent \(setting when the block heater is plugged in\). ? U110E \- Lost Ambient Temperature Message. ? P20E8 \- \(Diesel Exhaust Fluid\) Reductant Pressure Too Low. ? P2281 Air Leak Between MAF And Throttle Body. ? U3017 \- Control Module Timer/Clock Performance. ? P1477 \- Dual Snorkle Calibration Change to Voltage Limit. ? P20EE \- SCR NOX Catalyst Efficiency Below Threshold \- Bank 1. ? P20E8 \- \(Diesel Exhaust Fluid\) Reductant Pressure Too Low. ? U3017 \- Control Modu
- [10149698](https://open.wenmarpro.com/bulletins/10149698), 2018-12-03: Flash: 6.7L Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Several software improvements are available for the following conditions. The Following DTC Has Been Changed From A Two Trip Fault To One Trip Fault: ? U1A24 \- Lost Communication With Ammonia Sensor. Prevent Or Reduce Malfunction Indicator Lamp \(MIL\) Illumination When No Defect is Present For The Following Diagnostic Trouble Codes \(DTCs\). These Faults Have Been Changed From A One Trip Fault To A Two Trip Fault: ? U110E \- Lost Ambient Temperature Message. ? P0201 \- P0206 \- Fuel Injector X Circuit/Open. ? P049D \- EGR Control Position Exceeding Learning Limit. ? P0711 \- Transmission Temperature Sensor Performance. ? P0712 \- Transmission Temperature Sensor Low. ? P0713 \- Transmission Temperature Sensor High. ? P0714 \- Transmission Temperature Sensor Intermittent. ? P0740 \- TCC Out Of Range. ? P0869 \- Line Pressure High. ? P0933 \- Hydraulic Pressure Sensor Range/Performance. ? P0934 \- Line Pressure Sensor Circuit Low. ? P0935 \- Line Pressure Sensor Circuit High. ? P1775 \- Solenoid Switch Valve Latched In TCC Position. ? P1776 \- Solenoid Switch Valve Latched In LR Position. ? U0100 \- Lost Communication With ECM/PCM. ? U0002 \- CAN C Bus Off performance \- Bus Off. ? U110E \- Lost Ambient Temperature Message. Improvements To Prevent Or Reduce Malfunction Indicator Lamp \(MIL\) Illumination When No Defect Is Present For: ? P2281 Air Leak Between MAF And Throttle Body. ? U3017 \- Control Module Timer/Clock Performance. ? P1477 \- Dual Snorkle Calibration Change to Voltage Limit. ? P20EE \- SCR NOX Catalyst Efficiency Below Threshold \- Bank 1. ? P20E8 \- \(Diesel Exhaust Fluid\) Reductant Pressure Too Low. ? U3017 \- Control Module Timer/Clock Performance. ? P026B \- Injection Timing Performance. ? P0128 \- Thermostat Rationality. In cold ambient temperatures. ? P0087 \- Fuel R
- [10139920](https://open.wenmarpro.com/bulletins/10139920), 2018-06-11: Flash: 6.7L Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel.Prevent Or Reduce Malfunction Indicator Lamp \(MIL\) Illumination When No Defect is Present For The Following Diagnostic Trouble Codes \(DTCs\). These Faults Have Been Changed From A One Trip Fault To A Two Trip Fault: P0201\- P0206 \- Fuel Injector X Circuit/Open P049D\- EGR Control Position Exceeding Learning Limit P0711\- Transmission Temperature Sensor Performance P0712\- Transmission Temperature Sensor Low P0713\- Transmission Temperature Sensor High P0714\- Transmission Temperature Sensor Intermittent P0740\- TCC Out Of Range P0869\- Line Pressure High P0933\- Hydraulic Pressure Sensor Range/Performance P0934\- Line Pressure Sensor Circuit Low P0935\- Line Pressure Sensor Circuit High P1775\- Solenoid Switch Valve Latched In TCC Position P1776\- Solenoid Switch Valve Latched In LR Position U0100\- Lost Communication With ECM/PCM U0002\- CAN C Bus Off performance \- Bus Off U110E\- Lost Ambient Temperature Message.The Following DTC Has Been Changed From A Two Trip Fault To One Trip Fault: U1A24\- Lost Communication With Ammonia Sensor.Improvements To Prevent Or Reduce Malfunction Indicator Lamp \(MIL\) Illumination When No Defect Is Present For: U3017\- Control Module Timer/Clock Performance P026B\- Injection Timing Performance P0128\- Thermostat Rationality. In cold ambient temperatures P0087\- Fuel Rail Pressure Too Low P2281\- Air Leak Between MAF and Throttle Body U1421\- Implausible Ignition Key Off Time Received P026A\- Charge Air Cooler Efficiency Below Threshold P04DB \- Crankcase Ventilation System Disconnected P0544 \- Exhaust Gas Temperature Sensor Circuit \- Bank 1 Sensor 1 P0562 \- Battery Voltage Low P0604 \- Internal Control Module RAM Error P1451 \- Diesel Particulate Filter
- [10139840](https://open.wenmarpro.com/bulletins/10139840), 2018-06-11: Flash: 6.7L Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel. Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For The Following Diagnostic Trouble Codes \(DTCs\). These Faults Are Currently Tripped As A One Trip Fault And Should Have Been A Two Trip Fault: \* P0201 \- P0206 \- Fuel Injector X Circuit/Open. \* P049D \- EGR Control Position Exceeding Learning Limit. \* P0711 \- Transmission Temperature Sensor Performance. \* P0712 \- Transmission Temperature Sensor Low. \* P0713 \- Transmission Temperature Sensor High. \* P0714 \- Transmission Temperature Sensor Intermittent. \* P0740 \- TCC Out Of Range. \* P0869 \- Line Pressure High. \* P0933 \- Hydraulic Pressure Sensor Range/Performance. \* P0934 \- Line Pressure Sensor Circuit Low. \* P0935 \- Line Pressure Sensor Circuit High. \* P1775 \- Solenoid Switch Valve Latched In TCC Position. \* P1776 \- Solenoid Switch Valve Latched In LR Position. \* U0100 \- Lost Communication With ECM/PCM. \* U0002 \- CAN C Bus Off performance \- Bus Off. \* U110E \- Lost Ambient Temperature Message. The Following DTC Has Been Changed From A Two Trip Fault To One Trip Fault: \* U1A24 \- Lost Communication With Ammonia Sensor. Improvements To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For: \* P026B \- Injection Timing Performance. \* P0128 \- Thermostat Rationality. In cold ambient temperatures. \* P0087 \- Fuel Rail Pressure Too Low. \* P2281 \- Air Leak Between MAF and Throttle Body. \* U3017 \- Control Module Timer/Clock Performance. \* U1421 \- Implausible Ignition Key Off Time Received. \* P026A \- Charge Air Cooler Efficiency Below Threshold. \* P04DB \- Crankcase Ventilation System Disconnected. \* P0544 \- Exhaust Gas Temperature Sensor Circuit \- Bank 1 Sensor
- [10139637](https://open.wenmarpro.com/bulletins/10139637), 2018-06-11: Flash: Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel. Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For The Following Transmission Faults. These Faults Are Currently Tripped As A One Trip Fault And Should Have Been A Two Trip Fault: ? P0201 \- P0206 \- FUEL INJECTOR X CIRCUIT/OPEN ? P049D \- EGR CONTROL POSITION EXCEEDED LEARNING LIMIT ? P0711 \- TRANSMISSION TEMPERATURE SENSOR PERFORMANCE ? P0712 \- TRANSMISSION TEMPERATURE SENSOR LOW ? P0713 \- TRANSMISSION TEMPERATURE SENSOR HIGH ? P0714 \- TRANSMISSION TEMPERATURE SENSOR INTERMITTENT ? P0740 \- TCC OUT OF RANGE ? P0869 \- LINE PRESSURE HIGH ? P0933 \- HYDRAULIC PRESSURE SENSOR RANGE/PERFORMANCE ? P0934 \- LINE PRESSURE SENSOR CIRCUIT LOW ? P0935 \- LINE PRESSURE SENSOR CIRCUIT HIGH ? P1775 \- SOLENOID SWITCH VALVE LATCHED IN TCC POSITION ? P1776 \- SOLENOID SWITCH VALVE LATCHED IN LR POSITION ? U0100 \- LOST COMMUNICATION WITH ECM/PCM ? U0002 \- CAN C BUS OFF PERFORMANCE \- BUS OFF ? U110E \- LOST AMBIENT TEMPERATURE MESSAGE Improvements To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp \(MIL\) Illumination For: ? P026A \- CHARGE AIR COOLER EFFICIENCY BELOW THRESHOLD ? P04DB \- CRANKCASE VENTILATION SYSTEM DISCONNECTED ? P0544 \- EXHAUST GAS TEMPERATURE SENSOR CIRCUIT \- BANK 1 SENSOR 1 ? P0562 \- BATTERY VOLTAGE LOW ? P0604 \- INTERNAL CONTROL MODULE RAM ERROR ? P1451 \- DIESEL PARTICULATE FILTER SYSTEM PERFORMANCE ? P20EE \- SCR NOx CATALYST EFFICIENCY BELOW THRESHOLD \- BANK 1 \(Additional software enhancements to prevent false MIL\) ? P202E \- \(DIESEL EXHAUST FLUID\) REDUCTANT INJECTOR PERFORMANCE ? P2201 \- AFTERTREATMENT NOx SENSOR CIRCUIT PERFORMANCE \- BANK 1 SENSOR 1 ? P2281 \- AIR LEAK BETWEEN MAF AND THROTTLE BODY ? P24A5 \- EGR COO