# P0441 on the 2020 Jeep Wrangler

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 P0441

- [10241090](https://open.wenmarpro.com/bulletins/10241090), 2023-08-21: Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set: ? \*\*P02EE \- CYLINDER 1 INJECTOR CIRCUIT PERFORMANCE. ? P02EF \- CYLINDER 2 INJECTOR CIRCUIT PERFORMANCE. ? P02F0 \- CYLINDER 3 INJECTOR CIRCUIT PERFORMANCE. ? P02F1 \- CYLINDER 4 INJECTOR CIRCUIT PERFORMANCE. \*\* ? P0335 \- Crankshaft Position Sensor Circuit. ? P0339 \- Crankshaft Position Sensor Intermittent. ? P2C90 \- Crankcase Ventilation System \- Hose 9A9 Disconnected . ? P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\). ? P0441 \- EVAP Purge System Performance. ? P0607 \- ECU Internal Performance. ? P0506 \- Idle Speed Performance Lower Than Expected. The customer may also comment on the following: ? ?Performance Limited Service Fuel System? message in the Instrument Panel Cluster \(IPC\). This bulletin involves reprogramming the PCM with the latest available software.
- [10229311](https://open.wenmarpro.com/bulletins/10229311), 2023-01-09: MIL Lamp On Setting DTC?s P0441, P0456, P0457, P0440
- [10229149](https://open.wenmarpro.com/bulletins/10229149), 2023-01-09: 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 one or more of the following \(DTCs\) have been set: P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\). P0441 \- EVAP Purge System Performance. P0607 \- ECU Internal Performance. P0506 \- Idle Speed Performance Lower Than Expected
- [10229142](https://open.wenmarpro.com/bulletins/10229142), 2023-01-09: 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 the following \(DTC\): P0441\- EVAP Purge System Performance. The customer may comment on one or more of the following: Abnormal Engine noise heard periodically. This noise is caused by Variable Valve Timing \(VVT\) cleaning cycle. A misfire condition with no Malfunction Indicator Lamp \(MIL\) illuminationor Diagnostic Trouble Codes \(DTCs\) set. In addition, the following software enhancements are available: Updates to include misfire DTCs.
- [10223187](https://open.wenmarpro.com/bulletins/10223187), 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 one or more of the following \(DTCs\) have been set: P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\). P0441 \- EVAP Purge System Performance. P0607 \- ECU Internal Performance. P0506 \- Idle Speed Performance Lower Than Expected
- [10223180](https://open.wenmarpro.com/bulletins/10223180), 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 the following \(DTC\): P0441\- EVAP Purge System Performance. The customer may comment on one or more of the following: Abnormal Engine noise heard periodically. This noise is caused by Variable Valve Timing \(VVT\) cleaning cycle. A misfire condition with no Malfunction Indicator Lamp \(MIL\) illuminationor Diagnostic Trouble Codes \(DTCs\) set. In addition, the following software enhancements are available: Updates to include misfire DTCs.
- [10221741](https://open.wenmarpro.com/bulletins/10221741), 2022-09-26: MIL Lamp On Setting DTC?s P0441, P0456, P0457, P0440
- [10221488](https://open.wenmarpro.com/bulletins/10221488), 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 one or more of the following \(DTCs\) have been set: P0335 \- Crankshaft Position Sensor Circuit. P0339 \- Crankshaft Position Sensor Intermittent. P2C90 \- Crankcase Ventilation System \- Hose "A" Disconnected. P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\). P0441 \- EVAP Purge System Performance. P0607 \- ECU Internal Performance. P0506 \- Idle Speed Performance Lower Than Expected
- [10221487](https://open.wenmarpro.com/bulletins/10221487), 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 one or more of the following DTCs have been set: P0335 \- Crankshaft Position Sensor Circuit. P0339 \- Crankshaft Position Sensor Intermittent. P2C90 \- Crankcase Ventilation System \- Hose "A" Disconnected . P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\). P02EE \- Cylinder 1 Injector Circuit Performance. P02EF \- Cylinder 2 Injector Circuit Performance. P02F0 \- Cylinder 3 Injector Circuit Performance. P02F1 \- Cylinder 4 Injector Circuit Performance. P0441 \- EVAP Purge System Performance. P0607 \- ECU Internal Performance. P0506 \- Idle Speed Performance Lower Than Expected.
- [10220805](https://open.wenmarpro.com/bulletins/10220805), 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 one or more of the following \(DTCs\) have been set: P2172 \- High Airflow/Vacuum Leak Detected \(Instantaneous Accumulation\). P0441 \- EVAP Purge System Performance. P0607 \- ECU Internal Performance. P0506 \- Idle Speed Performance Lower Than Expected