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Home >> Suzuki >> 2006 >> XL-7 Base, RWD, Automatic >> 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 AND TROUBLE AREA CHART

DTC detecting condition Trouble area
DTC P0401: 
During deceleration (engine speed high with closed throttle position) in which fuel cut is involved, difference in intake manifold pressure between when EGR valve is opened and when it is closed is smaller than specified value.
(2 driving cycle detection logic)
  • EGR passage
  • EGR valve and its circuit
  • Manifold absolute pressure sensor
  • ECM
DTC P0402: 
During deceleration in which fuel cut is involved, difference in intake manifold pressure between when EGR valve is opened and when it is closed is larger than specified value.
(2 driving cycle detection logic)
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