P1404 Diagnostic Trouble Code Discussion for January 2004
EGR Position Sensor Rationality Closed
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| Help Request | Posted | |
| 2001 Buick Century Custom 3.1L MIL Lamp on VIN: 2G4WS52J01 P1404: EGR Valve Closed Position Performance. ... driveability problems. Code P1404. Scanner (Snap-On) showed EGR position as 11% at idle. Sounds like a piece of carbon, right? Removed and cleaned valve (looked OK). Code reset. Replaced valve. Code reset. Reference 5.01V. Unplug valve, scanner position re... |
January 08, 2004 | |
| 2001 Buick Century Custom 3.1L MIL Lamp on VIN: 2G4WS52J01 P1404: EGR Valve Closed Position Performance. ... driveability problems. Code P1404. Scanner (Snap-On) showed EGR position as 11% at idle. Sounds like a piece of carbon, right? Removed and cleaned valve (looked OK). Code reset. Replaced valve. Code reset. Reference 5.01V. Unplug valve, scanner position re... |
January 11, 2004 |
