P0071

Tests 1 - 2:

Tests 3 - 6:

SYMPTOM
P0071-AMBIENT TEMPERATURE SENSOR PERFORMANCE

WHEN MONITORED
With the ignition ON. Coolant Temperature greater than 71 °C (160 °F) No Inlet Air Temperature Sensor Faults present

SET CONDITION
After 5 warm cycles have occurred (coolant increases from great than 4.4 °C (40 °F) to a minimum of 71 °C (160 ° F) and the odometer mileage has increased 196.6 miles and the Inlet Air Temperature has increased less than 3 °C (5.4 °F) change in temperature. Two trip fault.

POSSIBLE CAUSES
- Intermittent condition
- Ambient temperature sensor voltage below 1.0 volts
- Sensor ground circuit high resistance
- Ambient temperature sensor signal circuit high resistance
- PCM