U0401 on the 2014 Dodge Dart
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.
| 18-023-16 | 2022-12-19. Service bulletin. Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination or one or more of the following conditions. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: 2015 UF Vehicles with (Sales Codes ED6, ED8) · P050D - Cold Start Rough Idle. · P0335 - Crankshaft Position Sensor Circuit. · P1607 - PCM Internal Shutdown Timer Rationality. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - EVAP System Small Leak. · P0480 - Cooling Fan 1 Control Circuit/Open. · U0402 - Implausible Data Received From TCM. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0441 - Evap Purge System Performance. · P0116 - Engine Coolant Temperature Sensor 1 Performance. In addition to the DTCs above the following improvements have been made: · Engine Startup Flare and Idle Surge. · Improved vehicle acceleration. 2015 PF Vehicles with (Sales Codes ED6, ED8) · **P1066 - Cylinder 1 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P1068 - Cylinder 2 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P106A - Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P106C - Cylinder 4 Oil Supply Solenoid Valve Switch Off Time Out Of Range.** · U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. · P1185 - General Pressure Sensor Correlation. · P050D - Cold Start Rough Idle. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - Evap System Small Leak. · P219A - Bank 1 Air-Fuel Ratio Imbalance. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. |
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| 18-023-16 | 2022-09-19. Service bulletin. Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination or one or more of the following conditions. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: 2015 UF Vehicles with (Sales Codes ED6, ED8) · P050D - Cold Start Rough Idle. · P0335 - Crankshaft Position Sensor Circuit. · P1607 - PCM Internal Shutdown Timer Rationality. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - EVAP System Small Leak. · P0480 - Cooling Fan 1 Control Circuit/Open. · U0402 - Implausible Data Received From TCM. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0441 - Evap Purge System Performance. · P0116 - Engine Coolant Temperature Sensor 1 Performance. In addition to the DTCs above the following improvements have been made: · Engine Startup Flare and Idle Surge. · Improved vehicle acceleration. 2015 PF Vehicles with (Sales Codes ED6, ED8) · **P1066 - Cylinder 1 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P1068 - Cylinder 2 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P106A - Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P106C - Cylinder 4 Oil Supply Solenoid Valve Switch Off Time Out Of Range.** · U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. · P1185 - General Pressure Sensor Correlation. · P050D - Cold Start Rough Idle. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - Evap System Small Leak. · P219A - Bank 1 Air-Fuel Ratio Imbalance. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. |
| 18-023-16 | 2022-09-15. Service bulletin. Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination or one or more of the following conditions. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: 2015 UF Vehicles with (Sales Codes ED6, ED8) · P050D - Cold Start Rough Idle. · P0335 - Crankshaft Position Sensor Circuit. · P1607 - PCM Internal Shutdown Timer Rationality. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - EVAP System Small Leak. · P0480 - Cooling Fan 1 Control Circuit/Open. · U0402 - Implausible Data Received From TCM. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0441 - Evap Purge System Performance. · P0116 - Engine Coolant Temperature Sensor 1 Performance. In addition to the DTCs above the following improvements have been made: · Engine Startup Flare and Idle Surge. · Improved vehicle acceleration. 2015 PF Vehicles with (Sales Codes ED6, ED8) · **U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. · P1185 - General Pressure Sensor Correlation.** · P050D - Cold Start Rough Idle. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - Evap System Small Leak. · P219A - Bank 1 Air-Fuel Ratio Imbalance. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0116 - Engine Coolant Temperature Sensor 1 Performance. · P050B - Cold Start Ignition Timing Performance. · P061A - Level 2 Torque Performance. · P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation). In addition to the DTCs above the following improvements have been made: |
| 18-023-16 | 2022-08-22. Service bulletin. Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination or one or more of the following conditions. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: 2015 UF Vehicles with (Sales Codes ED6, ED8) · P050D - Cold Start Rough Idle. · P0335 - Crankshaft Position Sensor Circuit. · P1607 - PCM Internal Shutdown Timer Rationality. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - EVAP System Small Leak. · P0480 - Cooling Fan 1 Control Circuit/Open. · U0402 - Implausible Data Received From TCM. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0441 - Evap Purge System Performance. · P0116 - Engine Coolant Temperature Sensor 1 Performance. In addition to the DTCs above the following improvements have been made: · Engine Startup Flare and Idle Surge. · Improved vehicle acceleration. 2015 PF Vehicles with (Sales Codes ED6, ED8) · U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. · P1185 - General Pressure Sensor Correlation. · P050D - Cold Start Rough Idle. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - Evap System Small Leak. · P219A - Bank 1 Air-Fuel Ratio Imbalance. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0116 - Engine Coolant Temperature Sensor 1 Performance. · P050B - Cold Start Ignition Timing Performance. · P061A - Level 2 Torque Performance. · P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation). · Low Idle Speed After Cold Start between -10°C to 0°C (14°F to 32°F). · Cold Idle Surge With AC Engaged |
| 18-023-16 | 2022-08-22. Service bulletin. Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination or one or more of the following conditions. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: 2015 UF Vehicles with (Sales Codes ED6, ED8) · P050D - Cold Start Rough Idle. · P0335 - Crankshaft Position Sensor Circuit. · P1607 - PCM Internal Shutdown Timer Rationality. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - EVAP System Small Leak. · P0480 - Cooling Fan 1 Control Circuit/Open. · U0402 - Implausible Data Received From TCM. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0441 - Evap Purge System Performance. · P0116 - Engine Coolant Temperature Sensor 1 Performance. In addition to the DTCs above the following improvements have been made: · Engine Startup Flare and Idle Surge. · Improved vehicle acceleration. 2015 PF Vehicles with (Sales Codes ED6, ED8) · **U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. · P1185 - General Pressure Sensor Correlation.** · P050D - Cold Start Rough Idle. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - Evap System Small Leak. · P219A - Bank 1 Air-Fuel Ratio Imbalance. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0116 - Engine Coolant Temperature Sensor 1 Performance. · P050B - Cold Start Ignition Timing Performance. · P061A - Level 2 Torque Performance. · P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation). |
| 18-022-17 REV. A | 2022-08-08. Service bulletin. Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs set in the PCM memory: U1504 - Implausible Message Data Length Received From Steering Angle Sensor. P0128 - Thermostat Rationality. P0335 - Crankshaft Position Sensor Circuit. P0340 - Camshaft Position Sensor Circuit Bank 1 Sensor 1. U1424-00 - Implausible Engine Torque Signal Received. P1066 - Cylinder 1 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P1068 - Cylinder 2 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P106A - Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P106C - Cylinder 4 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P050D - Cold Start Rough Idle. P0335 - Crankshaft Position Sensor Circuit. P1607 - PCM Internal Shutdown Timer Rationality. P0133 - O2 Sensor 1/1 Slow Response. P0456 - EVAP System Small Leak. P0480 - Cooling Fan 1 Control Circuit/Open. U0402 - Implausible Data Received From TCM. P2172 - High Airflow/Vacuum Leak Detected. P1D73 - AGS Performance. U0140 - Lost Communication With Body Control Module. P0441 - Evap Purge System Performance. P0116 - Engine Coolant Temperature Sensor 1 Performance.In addition to the DTCs above the following improvements have been made: Min spark changes to prevent catalytic converter overheating. Engine Startup Flare and Idle Surge. P1066 - Cylinder 1 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P1068 - Cylinder 2 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P106A - Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P106C - Cylinder 4 Oil Supply Solenoid Valve Switch Off Time Out Of Range. U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. |
| 18-023-16 REV. D | 2018-06-11. Service bulletin. Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination or one or more of the following conditions. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: 2015 UF Vehicles with (Sales Codes ED6, ED8) P050D - Cold Start Rough Idle. P0335 - Crankshaft Position Sensor Circuit. P1607 - PCM Internal Shutdown Timer Rationality. P0133 - O2 Sensor 1/1 Slow Response. P0456 - EVAP System Small Leak. P0480 - Cooling Fan 1 Control Circuit/Open. U0402 - Implausible Data Received From TCM. P2172 - High Airflow/Vacuum Leak Detected. P1D73 - AGS Performance. U0140 - Lost Communication With Body Control Module. · P0441 - Evap Purge System Performance. · P0116 - Engine Coolant Temperature Sensor 1 Performance. In addition to the DTCs above the following improvements have been made: · Engine Startup Flare and Idle Surge. · Improved vehicle acceleration. 2015 PF Vehicles with (Sales Codes ED6, ED8) · **P1066 - Cylinder 1 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P1068 - Cylinder 2 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P106A - Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. · P106C - Cylinder 4 Oil Supply Solenoid Valve Switch Off Time Out Of Range.** · U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. · P1185 - General Pressure Sensor Correlation. · P050D - Cold Start Rough Idle. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - Evap System Small Leak. · P219A - Bank 1 Air-Fuel Ratio Imbalance. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0116 - Engine Coolant Temperature Sensor 1 Performance. · P050B - Cold Start Ignition T |
| 18-023-16 REV. C | 2018-06-11. Service bulletin. Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination or one or more of the following conditions. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: 2015 UF Vehicles with (Sales Codes ED6, ED8) P050D - Cold Start Rough Idle. P0335 - Crankshaft Position Sensor Circuit. P1607 - PCM Internal Shutdown Timer Rationality. P0133 - O2 Sensor 1/1 Slow Response. P0456 - EVAP System Small Leak. P0480 - Cooling Fan 1 Control Circuit/Open. U0402 - Implausible Data Received From TCM. P2172 - High Airflow/Vacuum Leak Detected. P1D73 - AGS Performance. U0140 - Lost Communication With Body Control Module. P0441 - Evap Purge System Performance. P0116 - Engine Coolant Temperature Sensor 1 Performance. In addition to the DTCs above the following improvements have been made: · Engine Startup Flare and Idle Surge. · Improved vehicle acceleration. 2015 PF Vehicles with (Sales Codes ED6, ED8) · U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. · P1185 - General Pressure Sensor Correlation. · P050D - Cold Start Rough Idle. · P0133 - O2 Sensor 1/1 Slow Response. · P0456 - Evap System Small Leak. · P219A - Bank 1 Air-Fuel Ratio Imbalance. · P2172 - High Airflow/Vacuum Leak Detected. · P1D73 - AGS Performance. · U0140 - Lost Communication With Body Control Module. · P0116 - Engine Coolant Temperature Sensor 1 Performance. · P050B - Cold Start Ignition Timing Performance. · P061A - Level 2 Torque Performance. · P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation). In addition to the DTCs above the following improvements have been made: · Low Idle Speed After Cold Start between -10°C to 0°C (14°F to 32°F). · Cold Idle Surge With AC Engaged |
| 18-022-17 REV. A | 2018-06-11. Service bulletin. Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs set in the PCM memory: U1504 - Implausible Message Data Length Received From Steering Angle Sensor. P0128 - Thermostat Rationality. P0335 - Crankshaft Position Sensor Circuit. P0340 - Camshaft Position Sensor Circuit Bank 1 Sensor 1. U1424-00 - Implausible Engine Torque Signal Received. P1066 - Cylinder 1 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P1068 - Cylinder 2 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P106A - Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P106C - Cylinder 4 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P050D - Cold Start Rough Idle. P0335 - Crankshaft Position Sensor Circuit. P1607 - PCM Internal Shutdown Timer Rationality. P0133 - O2 Sensor 1/1 Slow Response. P0456 - EVAP System Small Leak. P0480 - Cooling Fan 1 Control Circuit/Open. U0402 - Implausible Data Received From TCM. P2172 - High Airflow/Vacuum Leak Detected. P1D73 - AGS Performance. U0140 - Lost Communication With Body Control Module. P0441 - Evap Purge System Performance. P0116 - Engine Coolant Temperature Sensor 1 Performance.In addition to the DTCs above the following improvements have been made: Min spark changes to prevent catalytic converter overheating. Engine Startup Flare and Idle Surge. Improved vehicle acceleration. P1066 - Cylinder 1 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P1068 - Cylinder 2 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P106A - Cylinder 3 Oil Supply Solenoid Valve Switch Off Time Out Of Range. P106C - Cylinder 4 Oil Supply Solenoid Valve Switch Off Time Out Of Range. U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. |
| 18-023-16 REV. B | 2018-06-11. Service bulletin. Flash: 2.4L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination or one or more of the following conditions. Upon further investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: 2015 UF Vehicles with (Sales Codes ED6, ED8) P050D - Cold Start Rough Idle. P0335 - Crankshaft Position Sensor Circuit. P1607 - PCM Internal Shutdown Timer Rationality. P0133 - O2 Sensor 1/1 Slow Response. P0456 - EVAP System Small Leak. P0480 - Cooling Fan 1 Control Circuit/Open. U0402 - Implausible Data Received From TCM. P2172 - High Airflow/Vacuum Leak Detected. P1D73 - AGS Performance. U0140 - Lost Communication With Body Control Module. P0441 - Evap Purge System Performance. P0116 - Engine Coolant Temperature Sensor 1 Performance. In addition to the DTCs above the following improvements have been made: Engine Startup Flare and Idle Surge. Improved vehicle acceleration. 2015 PF Vehicles with (Sales Codes ED6, ED8) **U0401 - Implausible Data Received From ECM/PCM - Signal Invalid. P1185 - General Pressure Sensor Correlation.** P050D - Cold Start Rough Idle. P0133 - O2 Sensor 1/1 Slow Response. P0456 - Evap System Small Leak. P219A - Bank 1 Air-Fuel Ratio Imbalance. P2172 - High Airflow/Vacuum Leak Detected. P1D73 - AGS Performance. U0140 - Lost Communication With Body Control Module. P0116 - Engine Coolant Temperature Sensor 1 Performance. P050B - Cold Start Ignition Timing Performance. P061A - Level 2 Torque Performance. P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation). In addition to the DTCs above the following improvements have been made: Low Idle Speed After Cold Start between -10°C to 0°C (14°F to 32°F). Cold Idle Surge With AC Eng |
11 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.