Possible Causes
WARNING: This page is about a different car, the 2003 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when communication between HV ECU and ECM is interrupted for 2 seconds or more. Possible causes are:
- Defective wiring or connectors.
- Defective HV ECU.
- Defective ECM.