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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 P0A7A-309 Through P0AA7-727 >> DTC P0AA4-228 Hybrid Battery Negative Contactor Circuit Stuck Closed; DTC P0AA5-229 Hybrid Battery Negative Contactor Circuit Stuck Open >> Description

DTC P0AA4-228 Hybrid Battery Negative Contactor Circuit Stuck Closed; DTC P0AA5-229 Hybrid Battery Negative Contactor Circuit Stuck Open: Description

Refer to the description for DTC P0AA1-224 .

DTC DETECTION CONDITION - TROUBLE AREA CHART

DTC No. INF Code DTC Detection Condition Trouble Area
P0AA4 228 Open or +B short in SMR3 (CON3) circuit
  • Wire harness or connector
  • HV relay assembly
  • HV control ECU
P0AA5 229 Short to GND in the SMR3 (CON3) circuit
  • Wire harness or connector
  • HV relay assembly
  • HV control ECU