$2,000.00 in repair costs. Mitsubishi Dealer Repair Shop working on it and still can't fix it. Replaced EGR Solenoid with a new one. New Oxygen Sensor. Increased Sensitivity of System for $110.00 Remove EGR and clear blockage for $220.00 Replaced Computer (MR578504) for $800.45 Service Engine Soon / Code PO401 came back... After all these repairs that did not fix the problem, should I look for help from the Department of Automotive Repair? I spent my last dime on gas returning the car to the shop. Please help!