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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 248 ((HVAC Systems - Electrical Diagnostics)) >> HVAC - Electrical Diagnostics >> DTC Troubleshooting >> DTC 82: Sensor Too Cold To Start Cooldown Test (MTC) >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
FAULTS PRESENT IN THE HVAC SYSTEM
EVAPORATOR TEMPERATURE BELOW 18.3°C (65°F) AT START OF COOLDOWN TEST
HIGH RESISTANCE ON (C121) SENSOR GROUND CIRCUIT
HIGH RESISTANCE ON (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT
EVAPORATOR TEMPERATURE SENSOR
A/C HEATER CONTROL
NOTE: This DTC will display as active if the ignition is not cycled after running the Cooldown Test. Otherwise, it will display as stored until cleared.
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