P0C33 Possible Causes
- Hybrid battery thermistor
- Smart battery unit
- Cable harness or connector
What Does It Mean?
How to Fix P0C33 Code
Check the “Possible Causes” listed above. Visually inspect the cable harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
P0C33 Possible Symptoms
Check engine light on (or service engine soon warning light)
P0C33 Meaning
Battery temperature sensors are provided at 3 locations of the HV battery. The resistance of the thermistor, built into each battery temperature sensor, varies according to changes in HV battery temperature. The lower the battery temperature, the higher the thermistor resistance. Conversely, the higher the temperature, the lower the resistance. The smart battery unit uses the battery temperature sensors to detect HV battery temperature and sends the detected value to the power management control ECU. Based on the results of this detection, the power management control ECU controls the fan. (The fan starts when the HV battery temperature exceeds a predetermined level.)