DTC P0C3E-628: DC / DC Converter Temperature Sensor "B" Range / Performance; DTC P0C41-627: DC / DC Converter Temperature Sensor "B" Intermittent / Erratic: Description

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The MG ECU located in the inverter with converter assembly detects the temperature of the boost converter using the temperature sensor built into the boost converter. If necessary, the MG ECU will limit inverter output to help prevent boost converter overheating. The hybrid vehicle control ECU also detects malfunctions in the sensor based on the temperature sensor values. The inverter with converter assembly detects malfunctions in the boost converter temperature sensor and its wiring.

DTC No.	INF Code	DTC Detection Condition	Trouble Area
P0C3E	628	Temperature calculated by the hybrid vehicle control ECU and the actual temperature are different for 10 seconds or more.	Inverter cooling system Cooling fan system Inverter with converter assembly Inverter water pump assembly (w/ motor)
P0C41	627	Unusual sudden change in boost converter temperature sensor (lower) output occurs and the offset continues, or an unusual sudden change in boost converter temperature sensor (lower) output occurs repeatedly.