Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Evaporator temperature sensor
The evaporator temperature sensor is installed on the heater. Its role is to inform the climate control module (CCM) of the temperature of the refrigerant. The climate control module (CCM) controls the request from the evaporator temperature sensor to activate the air conditioning compressor. The evaporator temperature sensor is directly connected to the climate control module (CCM).
There are diagnostics for the evaporator temperature sensor.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.