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EGR, which stands for Exhaust Gas Recirculation, comes equipped on most new vehicles, as well as some older models. The EGR valve recirculates burned exhaust emissions back into the intake system so the emissions can be re-burned, or recycled, out the exhaust.
8,578 Contributions.   If you just cleaned the EGR and replaced it, you can turn off the Check Engine Light (CEL) by disconnecting the negative battery cable for a couple of minutes. The enginâ¦e may run rough for a few miles until it re-learns. If the CEL comes back on, take the vehicle to AutoZone for a free scan.