LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2019 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Transmission >> Transmission Control Systems >> Electronic A/T Shift Lever System (Aga0F) - Diagnostic Codes (2 Of 5) >> Electronic Shift Lever System >> DTC P176D-12: IG2 Signal (Gear Shift Control Module "A") Circuit Short to Battery [12/2017 - 10/2023] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P176D-12: IG2 Signal (Gear Shift Control Module "A") Circuit Short to Battery [12/2017 - 10/2023]: Description

The shift control ECU detects that the IG2 signal is stuck ON by comparing it with the IG control status signal sent from the certification ECU (smart key ECU assembly).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P176D-12 IG2 Signal (Gear Shift Control Module "A") Circuit Short to Battery 8 seconds elapse after engine started and then turn the engine switch off. even when IG control status signal from certification ECU (smart key ECU assembly) is OFF, IG2 signal is ON continuously for 10 seconds or more
(1 trip detection logic)
  • Certification ECU (smart key ECU assembly)
  • Shift Control ECU
  • Wire harness or connector
Does not come on
  • Master Warning Light
    • Comes on
  • Multi-information Display Error Message
    • Displayed