Lincoln Nautilus P0402: EGR → Excessive Flow Diagnosis

  P0402 is an OBDII trouble code that’ll pop up in the Lincoln Nautilus. It has to do with the emissions system and stands for: P0402: EGR → Excessive Flow Diagnosis The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. The amount of gas … Read more