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P1404 Diagnostic Trouble Code Discussion for November 2009

EGR Position Sensor Rationality Closed


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Trouble Ticket Help Requests for DTC P1404
Help Request Posted
2004 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHK23194
P1404: EGR Valve Closed Position Performance. ... smoke (blue like oil) has EGR performance codes P0404 open position performance and code p1404 closed position performance. Going to start trouble tree but if anyone could point in the right direction let me know, thanks.
November 13, 2009