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Home >> Toyota >> 2006 >> Prius >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> P112 Hybrid Vehicle Control - DTC P0A94 - P3226, U0100 - U0146 >> DTC P0AA1-231 Hybrid Battery Positive Contractor Circuit Stuck Closed >> Description

DTC P0AA1-231 Hybrid Battery Positive Contractor Circuit Stuck Closed: Description

Refer to DTC P0AE7 (INF 224)  .

Because it might be impossible to shut off the high-voltage system if either of the No. 1 and No. 2 system main relays becomes stuck, the HV control ECU monitors the two relays and stops the system if malfunction is found in either relay.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No. INF Code DTC Detection Condition Trouble Area
P0AA1 231 System main relay terminal of HV battery positive side stuck closed
  • No. 1 system main relay
  • No. 2 system main relay