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P0404 Diagnostic Trouble Code Discussion for October 2010

EGR Position Sensor Performance


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Trouble Ticket Help Requests for DTC P0404
Help Request Posted
2005 Saturn Relay-2 3.5L MIL Lamp on VIN: 5GZDV03L75
P0404: EGR Open Position Performance. keeps setting egr code. we replaced with the updated valve and harness w/pipe and sent to dealer for PCM calibration but still sets egr code. i checked ports when replacing the valve and it is clear. double checked wiring and i think i got the wiring correct a...
October 11, 2010
2001 Chevrolet Silverado 1500 4.8L Misfire, MIL Lamp on VIN: 1GCEK14V0I
P0404: EGR Open Position Performance. Vehicle was driven into shop. Customer states CEL comes on for short periods intermittently. Used SOLUS-PRO Scanner to retrieve codes. I believe Mis-Fire & EGR Codes are a separate issue. Could a faulty EGR be the cause of an engine Mis-fire? The Scan tool...
October 12, 2010
2005 Saturn Relay-2 3.5L MIL Lamp on VIN: 5GZDV03L75
P0404: EGR Open Position Performance. keeps setting egr code. we replaced with the updated valve and harness w/pipe and sent to dealer for PCM calibration but still sets egr code. i checked ports when replacing the valve and it is clear. double checked wiring and i think i got the wiring correct a...
October 11, 2010
2001 Chevrolet Silverado 1500 4.8L Misfire, MIL Lamp on VIN: 1GCEK14V0I
P0404: EGR Open Position Performance. Vehicle was driven into shop. Customer states CEL comes on for short periods intermittently. Used SOLUS-PRO Scanner to retrieve codes. I believe Mis-Fire & EGR Codes are a separate issue. Could a faulty EGR be the cause of an engine Mis-fire? The Scan tool...
October 12, 2010