Possible Causes
WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. 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.