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Home >> Scion >> 2013 >> iQ EV >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Battery System (Diagnostic Codes & Symptom Tests) (Electric) >> Hybrid Battery System >> DTC P31C0-123: EV Battery No. 1 Self-diagnosis Permit Signal Circuit; DTC P31C5-123: EV Battery No. 2 Self-diagnosis Permit Signal Circuit >> Description

DTC P31C0-123: EV Battery No. 1 Self-diagnosis Permit Signal Circuit; DTC P31C5-123: EV Battery No. 2 Self-diagnosis Permit Signal Circuit: Description

The power management control ECU sends a self check permission signal to the battery voltage sensors.

DTC No. INF Code DTC Detection Condition Trouble Area
P31C0 123 Self check permission signal line malfunction (1 trip detection logic)
  • Wire harness or connector
  • Power management control ECU
  • Electric vehicle battery assembly (No. 1 battery voltage sensor, wire harness or connector)
P31C5
  • Wire harness or connector
  • Power management control ECU
  • Electric vehicle battery assembly (No. 2 battery voltage sensor, wire harness or connector)