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Home >> Toyota >> 2019 >> Highlander LE Plus, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 114 (SFI System (2GR-FXS) - Diagnostic Codes - (Hybrid) (2 Of 4)) >> SFI System >> DTC P0401: Exhaust Gas Recirculation Flow Insufficient Detected [11/2016 - ] >> Monitor Description

Monitor Description

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The ECM monitors the pressure inside the intake manifold while opening and closing the EGR valve during fuel cut operation. If there is no change in the manifold absolute pressure sensor value, the ECM interprets this as a malfunction of the EGR valve assembly, ECM will illuminate this MIL and store this DTC (2 trip detection logic).