P0C87 Possible Causes
- Faulty hybrid battery thermistor
- Faulty battery intelligence unit
- Hybrid battery thermistor harness is open or shorted
- Poor electrical connection in hybrid battery thermistor circuit
What Does It Mean?
How to Fix P0C87 Code
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
P0C87 Possible Symptoms
Check engine light illuminated (or service engine soon warning light)
P0C87 Meaning
Battery temperature sensors are provided at 3 HV battery locations. The thermistor resistance, built into each battery temperature sensor, varies with HV battery temperature changes. The lower the battery temperature, the higher the thermistor resistance. Conversely, the higher the temperature, the lower the resistance. The battery intelligence unit uses the battery temperature sensors to detect HV battery temperature and sends the detected value to the power management control ECU. Based on this detection result, the power management control ECU controls the fan. (The fan starts when the HV battery temperature exceeds a predetermined level.)