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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 57 (Engine Control System Diagnosis (2 Of 2) (HEV)) >> DTC U0001: High Speed CAN Communication Bus Off >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Check CAN message transfer status
  1. Open or short in CAN line
  2. Poor connection or damaged harness
  3. Faulty PCM
Enable Conditions
  • Battery voltage > 10V
  • Delay time > 0.5 sec.
Threshold Value
  • 20 wrong messages received by PCM
Diagnostic Time
  • 1 sec.
MIL On Condition
  • 2 Driving Cycles
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