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Home >> Infiniti >> 2002 >> G20 Automatic, RE4F03W >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - G20 >> Diagnostic Tests >> DTC P1402: EGR Function >> Possible Causes

Possible Causes

Malfunction is detected when EGR flow is detected under conditions that do not call for EGR. Possible causes are:

NOTE: Diagnosis for this DTC will occur when engine coolant temperature is less than 122-140°F (50-60°C). Therefore, it will be better to turn ignition on (start engine) when engine coolant temperature is less than 86°F (30°C) when starting DTC confirmation test.
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