P0A78 on the 2022 Chrysler Pacifica
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.
| 9100801 | 2026-04-29. Service bulletin. If the vehicle comes in with any of the following P codes, please refer to the active TSBs for HCP/AHCP flash BEFORE ordering PIM P0A78 - Drive Motor A Inverter Performance. P0A79 - Drive Motor B Inverter Performance. P0A3F-00 - Drive Motor A Position Sensor 1 Circuit. P0A43-00 - Drive Motor A Position Sensor Circuit Intermittent. P0A45-00 - Drive Motor B Position Sensor 1 Circuit. P0C1A-00 - Drive Motor B Torque Delivered Performance. |
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| 9100801 | 2026-04-22. Service bulletin. If the vehicle comes in with any of the following P codes, please refer to the active TSBs for HCP/AHCP flash BEFORE ordering PIM P0A78 - Drive Motor A Inverter Performance. P0A79 - Drive Motor B Inverter Performance. P0A3F-00 - Drive Motor A Position Sensor 1 Circuit. P0A43-00 - Drive Motor A Position Sensor Circuit Intermittent. P0A45-00 - Drive Motor B Position Sensor 1 Circuit. P0C1A-00 - Drive Motor B Torque Delivered Performance. |
| 08-218-24 | 2024-10-08. Service bulletin. "Flash: Hybrid Control Module (HCP), Auxiliary Hybrid Control Module/Power Inverter Module (PIM) Flash Updates *Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● **P0A78-00 - Drive Motor A Inverter Performance.** ● P0E15-00 - Hybrid-EV Battery Pack Coolant Heater A Control Performance. Customers may also comment on one or more of the following: ● **Message displayed on the Instrument Panel Cluster (IPC) stating that the ""Vehicle is shutting down in 2 minutes"".** ● Electric Vehicle (EV) mode may be inoperable. ● A reduction in cabin heater performance. This bulletin involves reprogramming the HCP and AHCP **(also known as the PIM)** with the latest available software." |
3 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.