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Home >> Suzuki >> 2005 >> XL-7 EX, RWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> H25 Engine >> Diagnostic Information and Procedures >> DTC P0401 / P0402: Exhaust Gas Recirculation (EGR) 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

DTC detecting condition Trouble area
DTCP0401: 
The difference of intake manifold absolute pressure between when EGR valve is opened and when it is closed is smaller than specified value.
(2 driving cycle detection logic)
  • EGR valve
  • EGR circuit
  • EGR system
  • MAP sensor
  • ECM (PCM)
DTC P0402:  The difference of intake manifold absolute 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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