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Home >> Acura >> 2007 >> TL Base >> Repair and Diagnosis >> Engine Performance >> System >> Advanced Diagnostics >> DTC P0401: Exhaust Gas Recirculation (EGR) Insufficient Flow >> Malfunction Threshold
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Malfunction Threshold

The ratio of the current EGR flow to the normal EGR flow is 15% or less.

The difference between the MAP value before and after the Enable Conditions are met is no more than the values in the table. The change in pressure should occur for at least 3 seconds.

MALFUNCTION THRESHOLD

Engine speed Barometric pressure
52 kPa (15.4 in.Hg, 392 mmHg) 102 kPa (30.0 in.Hg, 760 mmHg)
1,100 rpm 7 kPa (2.2 in.Hg, 56 mmHg)*1 17 kPa (5.1 in.Hg, 131 mmHg)*1
8 kPa (2.5 in.Hg, 65 mmHg)*2 14 kPa (4.2 in.Hg, 107 mmHg)*2
2,100 rpm*2 4 kPa (1.2 in.Hg, 32 mmHg) 12 kPa (3.5 in.Hg, 55 mmHg)
2,200 rpm*1 4 kPa (1.2 in.Hg, 32 mmHg) 7 kPa (2.1 in.Hg, 63 mmHg)