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P1676 Immobilizer-Smartra Message Error: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible Cause
Enable Conditions
  • IG ON
  • Smart Key ECM (integrated in I-PM)
Detecting time
  • 1.5 seconds
Threshold value
  • Data error or timing error
    1. Data error: Head value error, checksum value error, Smart Key status unknown error
    2. Timing Error: There is no valid message during Engine ECM communication
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