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Home >> Lexus >> 2021 >> LS 500 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - Diagnostic Codes (13 Of 14) >> SFI System >> DTC P2610-29: ECM/PCM Engine Off Timer Performance Signal Invalid; DTC P2610-93: ECM/PCM Engine Off Timer Performance No Operation [10/2023 - ] >> Monitor Description
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Monitor Description

  1. While the engine switch is off, the ECM monitors the synchronization of the soak timer and the CPU clock. If these two are not synchronized, the ECM interprets this as a malfunction, illuminates the MIL and stores the DTC.
  2. If the soak timer activates the ECM even though only a short amount of time has elapsed since the engine switch was turned off, or if the soak timer does not activate the ECM even though a considerable amount of time has elapsed since the engine switch was turned off, the ECM determines that the soak timer is malfunctioning, illuminates the MIL and stores a DTC the next time the engine switch is turned on (IG).
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