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Home >> Lexus >> 2008 >> ES 350 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - System & Component Testing, Removal, Inspection & Installation >> Active Control Engine Mount System >> DTC P16A3 TACH Signal Communication >> Description
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DTC P16A3 TACH Signal Communication: Description

If the TACH signal cannot be detected and if the communication is interrupted, the ECU will stop controlling the E-ACM.

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
P16A3 TACH signals from the ECM remain interrupted for 1.3 seconds or more.
  • Open or short in TACH signal circuit
  • Active control engine mount ECU
  • ECM