Inspection Procedure
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
If Information Codes 279 OR 281 is output, check if other DTC or information codes are recorded. If they are recorded, check and repair those codes first.
If Information Codes 279 OR 281 alone is recorded, replace the converter & inverter assembly.
If Information Codes 282 is output, replace the converter & inverter assembly.