Mitsubishi Galant persistent engine light issue related to EGR insufficient flow, unresolvable after multiple repairs on Mitsubishi Galant

Some Mitsubishi Galant owners report experiencing persistent engine light issues related to EGR insufficient flow, indicated by Diagnostic Trouble Code (DTC) P0401. This code signifies that the EGR system is not recirculating enough exhaust gases back into the engine. Common causes of this issue include a blocked EGR tube, a malfunctioning EGR valve, vacuum leaks, and a faulty EGR temperature sensor. Symptoms associated with the P0401 code often include the check engine light activation, engine performance problems such as reduced power and rough idle, and potential safety concerns like engine overheating. For those facing ongoing problems despite multiple repairs, it is advisable to consult a specialized mechanic or dealership with expertise in Mitsubishi vehicles to accurately diagnose and resolve the underlying issue.