Check engine light came on with significant loss of power. Poor acceleration. Lack of power resulting in slow speed which created a safety hazard for other traffic. Error code P300478 was confirmed by dealer. This is a known issue - EGR Valve Differential Pressure Sensor. This is a known (and common) issue. This should be a recall and not an extended warranty item.
- NHTSA ID
- 11749204
- Incident
- Jul 2, 2026