Check Engine Light Due to Failed Thermostat on Dodge Magnum

The thermostat may fail to close completely, causing the Check Engine Light to illuminate. This problem will prevent the engine from reaching normal operating temperature; a new thermostat should be installed.

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Average mileage: 92,112 (45,000–145,008)
Engines affected: 2.7L V6, 5.7L V8 HEMI
4 model years affected: 2005, 2006, 2007, 2008
15 people reported this problem
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Viewing 1 - 3 of 3 problem details
2006 Dodge Magnum - 5.7L V8 HEMI
The temp guage does not reach operating temp. Heater blows cold air. After driving it awhile car overheated.
2008 Dodge Magnum - 2.7L V6 145,008 mi,
Check engine light came on and the fan keeps blowing while the thermostat is not reading. Just happened this morning.
2005 Dodge Magnum - 5.7L V8 HEMI 45,000 mi,
check enigine light came on do to bad thermostat