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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 65 (Automatic Transaxle System Diagnosis (HEV)) >> DTC P0605: Internal Control Module Read Only Memory (ROM) Error >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • ROM checksum error
  1. ROM data reprogram illegally
  2. PCM/TCM
Enable Conditions
  • Ignition "ON"
Threshold Value
  • Checksum error or PCM/TCM fault
Diagnostic Time
  • 1 Driving cycle
Fail safe
  • Locked into 4th gear
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