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Home >> Oldsmobile >> 2003 >> Aurora >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1404: EGR System Performance >> Diagnostic Procedures
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Diagnostic Procedures

Fig 1: DTC P1404: EGR System Performance (Steps 1-11)
G00248741Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P1404: EGR System Performance (Steps 12-20)
G00248742Courtesy of GENERAL MOTORS CORP.
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