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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 P2451: Evaporative Emission System Switching Valve Stuck Closed >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

WARNING: This page is about a different variant/trim than selected.
Item Detecting Condition Possible Cause
DTC Strategy
  • Signal stuck
  1. NVLD switch stuck (After blow air into NVLD, check NVLD switch stuck)
Enable Conditions
  • ECU power latch phase
Threshold Value
  • NVLD switch keeps closed at opening canister purge valve during power latch time
Diagnostic Time
  • 30 sec.
MIL On Condition
  • 2 Driving Cycles
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