Century V6-3100 3.1L VIN M SFI (1998)
When the PCM commands the EGR valve open, Actual EGR Position is compared with Desired EGR Position. If Actual EGR Position is 15% less
than Desired EGR position when the PCM is commanding the EGR valve opened, DTC P0404 will set.
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For diagnosis of DTCs refer to System Diagnosis / Diagnostic Tables / Diagnostic Trouble Code Tables. See: Computers and Control
Systems/Testing and Inspection
