P0071

Tests 1 - 2:

Tests 3 - 6:

Test 7:

SYMPTOM
P0071-AMBIENT AIR TEMP SENSOR PERFORMANCE

WHEN MONITORED
With the ignition ON Coolant Temperature greater than 71 °C (160 °F).

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 Ambient Temperature has increased less than 3 °C (5.4 °F) change in temperature. Two trip fault.

POSSIBLE CAUSES
- Intermittent condition
- Ambient air temperature sensor voltage below 1.0 volts
- Sensor ground circuit voltage drop
- Ambient air temperature sensor signal circuit voltage drop
- FCM