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Home › Buick › 2002 › Regal LS › Repair and Diagnosis › Engine Performance › System › Engine Control System Self-Diagnostics - 3.8L › Diagnostic Tests › DTC P0401: EGR System Insufficient Flow › Conditions For Setting DTC

Conditions For Setting DTC

DTC sets when MAP changes monitored during EGR flow test indicate an insufficient EGR flow.

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