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2003
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Impala LS
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Repair and Diagnosis
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Engine Control System Self-Diagnostics - 3.8L
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Diagnostic Tests
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DTC P0404: EGR Open Position Performance
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Diagnostic Procedures
Diagnostic Procedures
Fig 1: DTC P0404: Exhaust Gas Recirculation Open Position Performance (Steps 1-10)
Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0404: Exhaust Gas Recirculation Open Position Performance (Steps 11-18)
Courtesy of GENERAL MOTORS CORP.
Courtesy of GENERAL MOTORS CORP.
Courtesy of GENERAL MOTORS CORP.