2003 Saturn L300 Problems
RepairPal has identified the most common problems with the 2003 Saturn L300 as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.Refine by vehicle
Many electrical problems can be caused by a failing Body Control Module or BCM. Before replacing, the system should be properly diagnosed to verify there are no other issues, such as electrical shorts or other failing modules. Remedying the condition requires replacement and programming of the Body Control Module.
The Saturn L300 may display the warning message "A/C off for Engine Protection" on the instrument panel. This may be accompanied by illumination of the check engine light and the temperature gauge reading cold at all times. This is a feature of the engine that is activated by the power control module when it detects the engine warming up too slowly. The OBD trouble code P0128 may also be stored.
The cause is simply a worn out thermostat that stays open at all times, preventing the engine from reaching the proper operating temperature.
Replacement of the thermostat will correct the issue.
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
A burning smell may develop due to an oil leak form one or both valve cover gaskets. Resealing the valve cover will generally correct this concern. However, the valve covers should be inspected and replaced if damaged.