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P0404 Diagnostic Trouble Code Discussion for September 2014

EGR Position Sensor Performance

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Trouble Ticket Help Requests for DTC P0404
Help Request Posted
2009 Dodge Grand Caravan SE 3.3L MIL Lamp on
P0404: Exhaust Gas Recirculation Circuit Range/Performance. Checked original code, had a p0404. checked all wiring had all proper readings including the 5v reference, good powers and grounds and computer control. So replace EGR valve, van came back with in a few days (100 km) with the light on again, same code reset th...
September 26, 2014
2004 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHK231X4
P0404: EGR Open Position Performance. Requesting help from the Duramax experts. I would like to know if there is a easy way of checking the EGR Cooler for being plugged. Not sure if pulling a vacuum on the EGR Valve while opening the EGR Valve Throttle Plate and looking for engine stumble will wo...
September 29, 2014