B1471 A/C inverter high voltage power resource fault. The inverter sees main battery voltage outside its specified range
What does B1471 mean on a Toyota?
B1471. A/C inverter high voltage power resource fault. The inverter sees main battery voltage outside its specified range. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.
Common causes of B1471
- Low or unstable hybrid main battery voltage
- Open or short in the inverter high voltage circuit
- Loose or corroded high voltage connector
- Damaged high voltage harness
- Failed A/C inverter assembly
How to fix B1471
- Confirm the code and read hybrid system data
- Check the hybrid main battery voltage and state of charge
- Inspect and reseat the high voltage connectors
- Test the inverter power circuit
- Replace the A/C inverter assembly only after tests fail