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Home >> Lexus >> 2006 >> RX 400h AWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (P310) - RX400H - DTC P0A37-258 Through P0A79-812 >> DTC P0A38-257 Generator Temperature Sensor Circuit Low; DTC P0A39-259 Generator Temperature Sensor Circuit High >> Description

DTC P0A38-257 Generator Temperature Sensor Circuit Low; DTC P0A39-259 Generator Temperature Sensor Circuit High: Description

Refer to the circuit description for DTC P0A2C-247 .

DTC DETECTION TROUBLE CONDITION

DTC No. INF Code DTC Detection Condition Trouble Area
P0A38 257 GND short in generator temperature sensor circuit
  • Wire harness or connector
  • HV control ECU
  • Hybrid vehicle transaxle assembly (Generator temperature sensor)
P0A39 259 Open or +B short in generator temperature sensor circuit
  • Wire harness or connector
  • HV control ECU
  • Hybrid vehicle transaxle assembly (Generator temperature sensor)

HINT:

After confirming that DTC P0A38-257 or P0A39-259 is output, use the intelligent tester to check "MOTOR 1 TEMP" in the HV system ECU data list.

GENERATOR TEMPERATURE SENSOR CIRCUIT

Displayed Temperature Malfunction
-50°C Open or +B short circuit
205°C GND short