CUSTOMER CONCERN Intermittent no-start condition with Check Hybrid System warning and generator-control DTC P0A1A-151. CAUSE Substitution with a known-good inverter/converter assembly eliminated the fault, confirming an internal inverter/converter failure. CORRECTION Remove and replace the inverter/converter assembly, clear DTC P0A1A-151, and program the MG ECU and power-management ECU as specified by campaign E0E before verifying ready-mode operation.