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Home >> Lexus >> 2009 >> LS 600hL >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (Diagnostic Codes (P1606-308 - U0424-537) & Circuit Tests) >> Hybrid Control System >> DTC P3227-583: Converter Temperature Sensor Circuit Low; DTC P3228-584: Converter Temperature Sensor Circuit High >> Description

DTC P3227-583: Converter Temperature Sensor Circuit Low; DTC P3228-584: Converter Temperature Sensor Circuit High: Description

The MG ECU uses a temperature sensor that is built into the boost converter to detect the boost converter temperature. The MG ECU limits the load based on signals transmitted by the boost converter temperature sensor, in order to help prevent the converter from overheating. The MG ECU also detects malfunctions in the boost converter temperature sensor and its wiring.

DTC No. INF Code DTC Detection Condition Trouble Area
P3227 583 Open or short to GND in the boost converter temperature sensor signal circuit Inverter with converter assembly
P3228 584 Short to +B in the boost converter temperature sensor signal circuit