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P0404 Diagnostic Trouble Code Discussion for August 2006

EGR Position Sensor Performance


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Trouble Ticket Help Requests for DTC P0404
Help Request Posted
1997 Pontiac Grand Am SE 2.4L Hesitation, Surge, MIL Lamp on VIN: 1G2NE52T6V
P0404: EGR Open Position Performance. Vehicle came in with MIL on and DTCs in memory. Looking at the data w/engine running showed TP% at 23%, EGR% at 65% but engine running smoothly. Backprobing the EGR 5V reference showed almost battery voltage and same with the TPS. But, with KOEO, they were bot...
August 10, 2006
1997 Pontiac Grand Am SE 2.4L Hesitation, Surge, MIL Lamp on VIN: 1G2NE52T6V
P0404: EGR Open Position Performance. Vehicle came in with MIL on and DTCs in memory. Looking at the data w/engine running showed TP% at 23%, EGR% at 65% but engine running smoothly. Backprobing the EGR 5V reference showed almost battery voltage and same with the TPS. But, with KOEO, they were bot...
August 10, 2006