# P07E4 on the 2019 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 P07E4

- [11030138](https://open.wenmarpro.com/bulletins/11030138), 2026-03-18: The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75\-PHEV, 8HP75\-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
- [11029770](https://open.wenmarpro.com/bulletins/11029770), 2026-03-05: Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75\-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
- [10220623](https://open.wenmarpro.com/bulletins/10220623), 2022-09-26: Flash: Transmission Control Module \(TCM\) Updates This bulletin involves reprogramming the TCM 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 Diagnostic Trouble Codes \(DTCs\) have been set:P1DDE\-00 \- Ignition Run\-Start Input 1\-2 Correlation. P1DF3\-00 \- ECU Not Initialized. P07E4\-00 \- Unable To Engage Park. P0735\-00 \- Gear 5 Shift Incorrect Ratio. The customer may also notice the following condition: Drivetrain "clunks" or harsh/rough upshifts, specifically going into 2nd, 3rd or 4th gears. The following enhancements are also included in this software update:Improvement to the 5\-3\-2 downshift to preventDTC P0735\-00. Shifter auto\-position correction with ignition in the ?Run/Acc? positions during an AutoPark event.
- [10188827](https://open.wenmarpro.com/bulletins/10188827), 2021-03-15: Flash: Transmission Control Module \(TCM\) Updates This bulletin involves reprogramming the TCM 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 Diagnostic Trouble Codes \(DTCs\) have been set:P1DDE\-00 \- Ignition Run\-Start Input 1\-2 Correlation. P1DF3\-00 \- ECU Not Initialized. P07E4\-00 \- Unable To Engage Park. P0735\-00 \- Gear 5 Shift Incorrect Ratio. The customer may also notice the following condition: Drivetrain "clunks" or harsh/rough upshifts, specifically going into 2nd, 3rd or 4th gears. The following enhancements are also included in this software update:Improvement to the 5\-3\-2 downshift to preventDTC P0735\-00. Shifter auto\-position correction with ignition in the ?Run/Acc? positions during an AutoPark event.
- [10175740](https://open.wenmarpro.com/bulletins/10175740), 2020-05-26: Flash: Transmission Control Module \(TCM\) Updates This bulletin involves reprogramming the TCM 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:P1DDE\-00 \- Ignition Run\-Start Input 1\-2 Correlation. P1DF3\-00 \- ECU Not Initialized. P07E4\-00 \- Unable To Engage Park. P0735\-00 \- Gear 5 Shift Incorrect Ratio. The following enhancement is included in this software update:Improvement to the 5\-3\-2 downshift to prevent DTC P0735\-00. Shifter auto\-position correction with ignition in RUN/ACC positions during an AutoPark event.