What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0A78-00Drive Motor A Inverter PerformanceP0A78-00Drive Motor A Inverter PerformanceP0A78Drive Motor A Inverter PerformanceP0A78MPI Module Internal Circuit MalfunctionView all · Manufacturer wording →
Manufacturer communications
37Original wording in English
JEEP
Reported code forms P0A78-00
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): ●…
JEEP
Reported code forms P0A78-01
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…
DODGE
Reported code forms P0A78-00
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…
DODGE
Reported code forms P0A78-00
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…
DODGE
Reported code forms P0A78-00
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…
DODGE
Reported code forms P0A78-00
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…
Check vehicle applicability
63A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Acura | ILX HYBRID | 2013 |
| Cadillac | ESCALADE | 2010 |
| Cadillac | ESCALADE | 2009 |
| Cadillac | ESCALADE HYBRID | 2009 |
| Chevrolet | SILVERADO | 2010 |
| Chevrolet | SILVERADO | 2009 |
| Chevrolet | SILVERADO HYBRID | 2009 |
| Chevrolet | TAHOE | 2010 |
| Chevrolet | TAHOE | 2009 |
| Chevrolet | TAHOE HYBRID | 2009 |
| Chrysler | PACIFICA | 2017 |
| Chrysler | PACIFICA PLUG-IN HYBRID | 2024 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.