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P0404 Diagnostic Trouble Code Discussion for October 2008

EGR Position Sensor Performance

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Trouble Ticket Help Requests for DTC P0404
Help Request Posted
2005 Chevrolet Malibu LS 3.5L MIL Lamp on VIN: 1G1ZT54875
P0404: EGR Open Position Performance. ... codes to set, but it is frustrating for both me and the customer. The dealer did the service bulletin for code P0404 on 1-2-07 @ 32636 miles which was to replace the Delco EGR valve with a Seimens part,tubes,gaskets,conne...
October 14, 2008
2000 GMC Safari SL 4.3L MIL Lamp on VIN: 1GKDM19W9Y
P0404: EGR Open Position Performance. Thanks in advance for your help. Heres the story, van came in with a CEL and found codes po404 and po405. Checked over and cleared codes and po405 (egr sensor a voltage low) Came back right away. Check data and dead on zero. Went though checks on egr and check...
October 27, 2008