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Home >> Pontiac >> 2008 >> Grand Prix GXP >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 3.8L - DTC P0385 To DTC P2108) >> DTC P0403, P0404, P0405, P0406, or P042E >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

Inspect for excessive deposits on the EGR valve pintle or seat. Remove the EGR valve and inspect for deposits that may interfere with the EGR valve pintle extending completely or cause the pintle to stick.

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