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Home >> Suzuki >> 2006 >> Grand Vitara Premium, RWD, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information And Procedures >> DTC P0401/P0402: Exhaust Gas RECIRCULATION Flow Insufficient Detected/Excessive Detected >> DTC Detecting Condition and Trouble Area
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DTC Detecting Condition and Trouble Area

DTC DETECTING CONDITION CHART

DTC detecting condition Trouble area
DTC P0401: Exhaust Gas Recirculation Flow Insufficient Detected  MAP variation is 0.67 kPa or less when EGR valve is either opened or closed. (2 driving cycle detection logic, monitoring once per driving cycle)
  • EGR valve
  • EGR circuit
  • MAP sensor
  • ECM
DTC P0402: Exhaust Gas Recirculation Flow Excessive Detected  MAP variation is 8.7 kPa or more when EGR valve is either opened or closed. (2 driving cycle detection logic, monitoring once per driving cycle)