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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 B1602: CAN Error >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • CAN Signal Check
  1. Can high: Short to battery
  2. Can low: Short to ground
  3. Short between CAN high and low wire
  4. Poor contact or open in CAN high or Low
  5. Faulty Smartkey Module (PIC IMMO Unit)
Enable Conditions
  • IG KEY ON or Engine ON.
Threshold value
  • CAN high/low: Voltage is "0" means short to ground, Voltage is "B+" means short to battery
Diagnostic Time
  • For more than 2 seconds
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