P0A78 · 原廠技術資料

JEEP · 2026-08-07

Powertrain Modules Software Update Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P1626-00 - Park Pawl Motor Stuck. NOTE: If DTCs P1E25-00, P1625-00 or P1626-00 are active, the vehicle will stay in READY mode since the Electric Vehicle Control Unit (EVCU) is not able to confirm if the park pawl is engaged, and the vehicle will be secured. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. Customers may also comment on one or more of the following: ● Vehicle is not shutting off and draining the 12V battery. ●…

JEEP · 2026-06-06

Not applicable to vehicles built for US market. Vehicle Will Not Start With Display Of The Message "Electric Traction System Fault" 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): ● P0BD8-11 - Drive Motor Inverter Temperature Sensor "D" Circuit Low. ● P0A78-01 - Drive Motor "A" Inverter Performance. ● P0AEF-11 - Drive Motor Inverter Temperature Sensor "A" Circuit Low. ● P10D3-41 - High Level Driving Power Transistor Of The Inverter Of The Electric Traction Machine - General Checksum Failure (Electric Machine Management ECU). Customers may also comment on one or more of the following: ● Vehicle does not start. ● "Electric Traction System Fault" message displayed in the…

DODGE · 2026-03-07

RSU With Additional Sleep Cycles for HV Battery Integrity Check Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following symptoms: ● Vehicle will not power down causing a 12V battery drain. ● Vehicle does not start. ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ● Vehicle will not shift out of park.…

DODGE · 2026-03-07

RSU With Additional Sleep Cycles for HV Battery Integrity Check Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● Vehicle will not power down causing a 12V battery drain. ● Vehicle does not start. ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ● Vehicle will not shift out of park. This bulletin involves…

DODGE · 2026-03-07

Flash: Motor Control Processor A (MCP A) Updates 6B3 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● Vehicle not shutting off and a draining 12V battery. ● Vehicle no start. ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ● Vehicle will not shift out of park. This bulletin involves…

DODGE · 2026-03-07

Flash: Motor Control Processor B (MCP B) Updates 6B3 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● Vehicle not shutting off and a draining 12V battery. ● Vehicle no start. ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ● Vehicle will not shift out of park. This bulletin involves…

DODGE · 2026-03-07

Flash: Motor Control Processor A (MCP A) Updates 11B3 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set **one or more of the following Diagnostic Trouble Codes (DTCs)**: ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● Vehicle does not start. ● Vehicle will not power down causing a 12V battery drain. ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ● Vehicle will not shift out of park. This…

DODGE · 2026-03-07

Flash: Motor Control Processor B (MCP B) Updates 11B3 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set **one or more of the following Diagnostic Trouble Codes (DTCs)**: ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● Vehicle will not power down causing a 12V battery drain. ● Vehicle does not start. ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ● Vehicle will not shift out of park. This…

JEEP · 2025-12-18

Flash: Motor Control Processor A (MCP A) Updates 6B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P1626-00 - Park Pawl Motor Stuck. NOTE: If DTCs P1E25-00, P1625-00 or P1626-00 are active, the vehicle will stay in READY mode since the Electric Vehicle Control Unit (EVCU) is not able to confirm if the park pawl is engaged, and the vehicle will be secured. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. Customers may also comment on one or more of the following: ● Vehicle is not shutting off and draining the 12V…

JEEP · 2025-12-18

Flash: Motor Control Processor B (MCP B) Updates 6B3 ustomers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P1626-00 - Park Pawl Motor Stuck. NOTE: If DTCs P1E25-00, P1625-00 or P1626-00 are active, the vehicle will stay in READY mode since the Electric Vehicle Control Unit (EVCU) is not able to confirm if the park pawl is engaged, and the vehicle will be secured. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance. Customers may also comment on one or more of the following: ● Vehicle is not shutting off and draining the 12V…

JEEP · 2025-12-18

RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Motor Control Processor A (MCP A) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced…

JEEP · 2025-12-18

RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Motor Control Processor B (MCP B) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced…

DODGE · 2025-12-18

RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Motor Control Processor A (MCP A) Updates 11B3 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● **Vehicle will not power down causing a 12V battery drain. ● Vehicle does not start.** ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ●…

DODGE · 2025-12-18

RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Motor Control Processor A (MCP A) Updates 11B3 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● **Vehicle will not power down causing a 12V battery drain. ● Vehicle does not start.** ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ●…

DODGE · 2025-12-18

RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Motor Control Processor A (MCP A) Updates 11B3 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● **Vehicle will not power down causing a 12V battery drain. ● Vehicle does not start.** ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ●…

DODGE · 2025-12-18

Flash: Motor Control Processor A (MCP A) Updates 6B3 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTC)s: ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● **Vehicle not shutting off and a draining 12V battery. ● Vehicle no start.** ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ● Vehicle will not shift out of park. This bulletin involves…

DODGE · 2025-12-18

Flash: Motor Control Processor B (MCP B) Updates 6B3 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. The customer may comment on one or more of the following symptoms: ● **Vehicle not shutting off and a draining 12V battery. ● Vehicle no start.** ● Wrench icon is illuminated on the Instrument Panel Cluster (IPC). ● Turtle icon illuminated on the IPC. ● Reduced power. ● Vehicle will not shift out of park This bulletin involves reprogramming the…

DODGE · 2025-12-18

Flash: Motor Control Processor A (MCP A) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement:…

DODGE · 2025-12-18

Flash: Motor Control Processor B (MCP B) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement:…

JEEP · 2025-12-18

Flash: Motor Control Processor B (MCP B) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement:…

JEEP · 2025-12-18

Flash: Motor Control Processor A (MCP A) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● **P1E18-00 - Internal Control Module Electronic Park Performance. ● P1625-00 - Park Pawl System Failure. ● P0A78-00 - Drive Motor A Inverter Performance. ● P0A79-00 - Drive Motor B Inverter Performance.** ● P1626-00 - Park Pawl Motor Stuck. Customers may also comment on one or more of the following: ● **Will not be able to start the vehicle. ● Vehicle not shutting off and a draining 12V battery.** ● Wrench lamp on in the Instrument Panel Cluster (IPC). ● Not able to move the shifter out of Park. ● Vehicle has reduced power. This bulletin also includes the following software enhancement:…

CHRYSLER · 2024-12-13

"Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) 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 - Drive Motor A Inverter Performance. ● P0A79 - Drive Motor B Inverter Performance.** ● P0A33 - Drive Motor B Temperature Sensor 1 Circuit High. ● P0A2D - Sensor Power Supply 1 Circuit High ● P215B - Vehicle Speed Output Shaft Speed Correlation. ● P0C4A - Drive Motor A Inverter Over Temperature. ● P0E15 - Hybrid-Ev Battery Pack Coolant Heater A Control Performance. ● P1AFE - MCPB Improper Shut Down. ● P1AF8 - MCPA Control Module Shutdown Performance. ● P0513 - Invalid Skim Key. ● U151A-87 - Hybrid Control Processor Secret…

CHRYSLER · 2024-10-03

"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…

CHRYSLER · 2024-09-26

"Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) 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 - Drive Motor A Inverter Performance. ● P0A79 - Drive Motor B Inverter Performance. Customers may also experience the following: ● ""Vehicle is shutting down in two minutes"" message displayed in the Instrument Panel Cluster (IPC). NOTE: The vehicle can be restarted with the next ignition/key cycle from Off and then back to Start. This bulletin involves reprogramming the HCP and AHCP also known as Power Inverter Module (PIM), with the latest available software. "

CHRYSLER · 2024-09-26

"Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) 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 - Drive Motor A Inverter Performance. ● P0A79 - Drive Motor B Inverter Performance. Customers may also experience the following: ● ""Vehicle is shutting down in two minutes"" message displayed in the Instrument Panel Cluster (IPC). NOTE: The vehicle can be restarted with the next ignition/key cycle from Off and then back to Start. This bulletin involves reprogramming the HCP and AHCP also known as Power Inverter Module (PIM), with the latest available software."

JEEP · 2023-07-20

Power Inverter Module (PIM) Replacement Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTCs have been set: ? P0A78-00 - Drive Motor A Inverter Performance. ?P0A79-00 - Drive Motor B Inverter Performance. Customer may also experience the following: ? Internal Combustion Engine (ICE) propulsion only and no EV or hybrid mode only when these DTCs are present. This bulletin involves replacing the PIM.

TOYOTA · 2023-06-07

DP: The Customer Confidence Program is a component of a class action settlement that includes several elements of coverage. The Customer Confidence Program provides coverage as it applies to the intelligent power module (IPM). The specific condition covered by this Customer Confidence Program 23TE02 is failure of the IPM located inside the inverter assembly of the hybrid system indicated by DTCs P0A7A and/or P0A78. If either of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter Fail Safe Mode. Toyota will also provide coverage if the IPM has failed due to a thermal event regardless of what DTC is detected, or if the IPM has failed and the failure cannot be demonstrated to be due to anything other than a thermal event.

TOYOTA · 2023-02-16

DP: The Customer Confidence Program is a component of a class action settlement that includes several elements of coverage. The Customer Confidence Program provides coverage as it applies to the intelligent power module (IPM). The specific condition covered by this Customer Confidence Program 23TE02 is failure of the IPM located inside the inverter assembly of the hybrid system indicated by DTCs P0A7A and/or P0A78. If either of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter Fail Safe Mode. Toyota will also provide coverage if the IPM has failed due to a thermal event regardless of what DTC is detected, or if the IPM has failed and the failure cannot be demonstrated to be due to anything other than a thermal event.

TOYOTA · 2023-02-16

TSB: Some 2010 ? 2015 model year Prius and 2012 ? 2017 model year Prius V vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A7A and/or P0A78, indicating a malfunction has occurred in the inverter assembly with converter. Follow the Repair Procedure in this bulletin to identify the specific components within the inverter assembly with converter that need to be replaced and address this condition.

ACURA · 2020-12-18

"Service Bulletin - The motor power inverter (MPI), also known as the intelligent inverter unit (IIU), may fail over time due to a defective solder joint. This failure may result in one or more of the following DTC(s): -P1440 (MPI Module Output Circuit Malfunction) -P1437 (MPI Module Short Circuit) -P15A5 (Motor Current Sensor Circuit Malfunction) -P0A78 (MPI Module Internal Circuit Malfunction) -P0AE1 (Bypass Contractor Malfunction) -P0A3C (Motor Control Module (MCM) Overheating) -P0A3F (Motor Rotor Position Sensor Circuit Malfunction) -P0DA8 (MPI Module Voltage Malfunction) -P1634 (MPI Module Signal Circuit Malfunction) -P0AEE (MPI Internal Circuit Malfunction) -P0A27 (High Voltage Contactor Stays Activated) American Honda is extending the warranty coverage of the motor power inverter…