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P0401 ISUZU - Exhaust Gas Recirculation Flow Insufficient Detected

Repair Importance Level: 2/3
Repair Difficulty Level: 2/3 What does this mean?

Possible causes

  • EGR passage clogged
  • Faulty EGR Vacuum Modulator Valve
  • Faulty EGR Valve
  • Faulty EGR solenoid valve
  • EGR solenoid valve harness is open or shorted
  • EGR solenoid valve circuit poor electrical connection
  • Dead (Weak) battery
  • Faulty EGR temperature sensor and circuit
  • Exhaust gas leaks
What does this mean?
OBDII Code P0401 Isuzu - Exhaust Gas Recirculation Flow Insufficient Detected -

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Posted and Edit by 06-14-2015