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Home >> Pontiac >> 2002 >> Aztek FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P0404: EGR Valve Open Pintle Position >> Test Description
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Test Description

The number below refers to the step numbers in the diagnostic procedures.

  1. 3

    If DTC P0404 will only set under certain conditions, the malfunction may be intermittent. See DIAGNOSTIC AIDS . If an intermittent wiring problem is not present, test for a faulty connection at the PCM or the EGR valve. If the connections are okay and DTC P0404 continues to set, replace the EGR valve.

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