Powertrain
generic / SAE
P0A79
Drive Motor B Inverter Performance
The drive motor B inverter does not deliver the expected power conversion. Switching loss elevated, gate driver fault, or capacitor degraded.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberA / 79
Possible causes
- IGBT switching characteristic degraded high
- DC-link capacitor aged medium
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 800–5000 €
- Estimated time: 3–14 h
- Component: drive motor b inverter
- Component: hybrid control module
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012