Lack of power and engine management light on, fault code stored P0400 EGR system flow malfunction. New EGR valve fitted at Toyota dealers, fault still present.
The fault was cured by cleaning the intake system with Forté Diesel Intake Cleaner as per instructions, Forté Clean and Protect (Forté Oil System Protector and Forté Advanced Formula Motor Flush) carried out and Forté Advanced Formula Diesel Treatment added to the fuel tank and a 50-mile road test was carried out. After treatment the fault code cleared and the vehicle performance was restored.
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