Chrysler Aspen exhaust manifold replacement led to EGR code issue due to defective part on Chrysler Aspen

Some Chrysler Aspen owners report experiencing issues related to the Exhaust Gas Recirculation (EGR) system when replacing the exhaust manifold, particularly due to defective parts. These issues may arise from broken exhaust manifold bolts, which are common in these vehicles. After the replacement, owners have noted that problems with the EGR system can lead to error codes such as P0400, P0403, P0404, P0405, P0406, or P0490, indicating specific malfunctions. A defective component, such as a faulty EGR valve or sensor, can trigger these error codes and result in increased emissions and reduced fuel efficiency. To resolve EGR code issues, it may be necessary for owners to inspect and potentially replace the EGR valve or sensor to restore proper system functionality.