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Home >> Chevrolet >> 2002 >> Impala LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0404: EGR Open Position Performance >> Conditions For Setting DTC
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Conditions For Setting DTC

DTC sets when the difference between EGR position sensor and desired EGR position is more than 15 percent for more than 25 seconds.