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Home >> Hyundai >> 2017 >> Accent Value Edition >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P050A: Cold Start Idle Air Control System Performance >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

DTC DETECTING CONDITIONS AND POSSIBLE CAUSES

Item Detecting Condition Possible Cause
Main action
  • Monitor the spark timing
  1. Intake system for blockage
  2. Throttle plate for carbon deposits
Prerequisite condition
  • Vehicle speed = 0mph
  • Coolant temperature at start is between 6°C (42.8°F) and 30°C (86°F)
  • Intake air temperature is higher than 6°C (42.8°F).
  • Engine is running (idle).
  • Cold Start Catalyst Light Off active
Threshold value Case 1
  • Desired engine speed is over 100rpm greater than actual engine speed or Actual Idle torque is 10Nm higher than Idle torque
Case 2
  • Desired engine speed is over 200rpm lower than atucal engine speed or Actual Idle torque is 20Nm lower than Idle torque
Case3
  • Fuel cut-off is higher than 3 times
Diagnostic Time
  • 8 sec
MIL
  • 2 Drive Cycle