Evaporator Temperature Sensor Circuit Open (Active)

Test 1 - 2:

Test 3 - 4:

SYMPTOM
EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN (ACTIVE)

WHEN MONITORED
With the ignition on.

SET CONDITION
This DTC will set if the A/C - Heater Control Module sees voltage above 4.9 volts on the Evaporator Temperature Sensor Signal circuit.

POSSIBLE CAUSES
- Evaporator temperature sensor signal circuit shorted high
- Evaporator temperature sensor
- Evaporator temperature sensor signal circuit open
- Sensor ground circuit open
- A/C - heater control module