One problem related to vehicle overheat has been reported for the 2006 Mazda MAZDA6. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Mazda MAZDA6 based on all problems reported for the 2006 MAZDA6.
The check engine light comes on. I had the code checked and it is the cooling sensor. The vehicle is not overheating and light will go off for a short time and then come on again.