code P0401 is the code How can I turn the engine light off?
Engine light is on on 2001 Chrysler PT Cruiser
This code is for a problem with your EGR system. Look at the link below. The Light will not stay off until the problem with your EGR system is properly repaired. http://repairpal.com/OBD-Code-P0401
1 more answer
EGR valve may need replaced.Also check male end of sensor plug for bad wires are cracks, i have had to replace two due to heat damage and age