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 |
|---|
| (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN |
| (C121) SENSOR GROUND CIRCUIT OPEN |
| EVAPORATOR TEMPERATURE SENSOR |
| A/C HEATER CONTROL |
NOTE:
This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC is stored. Refer to HVAC System Test (ATC) for stored DTC test procedures.