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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 92 (Smart Key Unit Diagnosis (HEV)) >> DTC B1625: ECM Communication Data Failure >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Checking Data status receiving from PCM
  1. Poor connection
  2. Power supply to Smartkey Unit (SMK IMMO Unit)
  3. Communication open/Short in PCM communication Line
  4. Check noise at SMK communication Line coming from PCM
  5. Smartkey Unit (SMK IMMO Unit)
  6. PCM
Enable Conditions
  • Data receiving from PCM when IGN OFF to ON
Threshold value
  • Fault Data receiving from PCM
Diagnostic Time
  • DTC sets if PCM Data errors for 5 times
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