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.
| S2621000003 REV.A | 2026-03-18. Service bulletin. 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. |
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| S2621000003 | 2026-03-05. Service bulletin. 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. |
| 2100921 | 2022-09-26. Service bulletin. 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. |
| 21-009-21 | 2021-03-15. Service bulletin. 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. |
| 21-033-20 | 2020-05-26. Service bulletin. 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. |
5 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.