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Home >> Toyota >> 2015 >> Prius C One >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Codes (P2511-149 - U0424-537) & Circuit Tests) >> Hybrid Control System >> DTC P3110-223: HV Main Relay [12/2014 - ] >> Description

DTC P3110-223: HV Main Relay [12/2014 - ]: Description

The hybrid vehicle control ECU monitors the IGCT relay and detects the following malfunction.

DTC No. INF Code DTC Detection Condition Trouble Area
P3110 223 IGCT relay stuck on (+B short)
IGCT relay is stuck on or a short to B+ exists. Power to the HV ECU does not shut down when the ignition switch is turned off.
(1 trip detection logic)
  • Wire harness or connector
  • IGCT relay
  • Hybrid vehicle control ECU