B1479 Refrigerant flow sensor circuit fault. The A/C amplifier reads an abnormal refrigerant flow signal from the compressor
What does B1479 mean on a Toyota?
B1479. Refrigerant flow sensor circuit fault. The A/C amplifier reads an abnormal refrigerant flow signal from the compressor. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.
Common causes of B1479
- Failed refrigerant flow sensor
- Open or short in the flow sensor circuit
- Loose or corroded compressor connector
- Damaged sensor harness
- Low refrigerant charge
How to fix B1479
- Confirm the code and read A/C data
- Check the refrigerant charge
- Inspect and reseat the compressor flow sensor connector
- Test the flow sensor circuit and signal
- Replace the compressor or sensor only after tests fail