LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2012 >> Prius Two >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Electronic A/T Shift Lever System (Except Plug-In) (Diagnostic Codes & Circuit Tests) >> Electronic Shift Lever System >> DTC C2311: Communication Error from HV ECU >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC C2311: Communication Error from HV ECU: Description

The transmission control ECU receives a P position switch signal from the power management control ECU (HV CPU) and activates the parking lock motor by controlling current, causing the parking lock mechanism to switch. The transmission control ECU stores this DTC when it detects a communication error between the power management control ECU (HV CPU) and the transmission control ECU.

DTC No. DTC Detection Condition Trouble Area
C2311 With the power switch on (IG) (IG circuit malfunction is not detected), a signal cannot be received from the power management control ECU (open or short in the PCON terminal circuit) or a pulse signal malfunction is received from the power management control ECU for 2 seconds or more.
  • Transmission control ECU assembly
  • Power management control ECU
  • Wire harness or connector