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Home >> Subaru >> 2021 >> Forester Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 4) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P0401: EGR Abnormal (EGR Amount Too Small) >> General Description >> Execution Condition

Execution Condition

Secondary parameters Execution condition
Battery voltage
Barometric pressure
Ambient air temperature
Engine speed
Vehicle speed
Park/neutral position switch
Time while the fuel shut-off function is in operation
Compulsory drive of EGR valve delay time (low flow rate monitor only)
10.9 V or more
75.1 kPa (563 mmHg, 22.2 inHg) or more
7°C (44.6°F) or more
Value of Mapl - value of Map2 36km/h (22.4MPH) or more
OFF
2000ms or more
1000ms or more
MAP SPECIFICATION 1

Barometric pressure (kPa (mmHg, inHg)) 75.1 (563, 22.2 inHg) 86.7 (650, 25.6 inHg) 101.3 (760, 29.9 inHg)
Engine speed (rpm) 1100rpm 1100rpm 1100rpm
MAP SPECIFICATION 2

Barometric pressure (kPa (mmHg, inHg)) 75.1 (563, 22.2 inHg) 86.7 (650, 25.6 inHg) 101.3 (760, 29.9 inHg)
Engine speed (rpm) 2000rpm 2100rpm 2250rpm