P0071low severityPowertrain
Ambient Air Temperature Sensor Range/Performance
on 1999 Ford F-150 5.4L V8 Supercharged · 4WD
What this code means
The ambient air temperature sensor reading is out of expected range or not changing appropriately.
Symptoms
- Incorrect temp reading
- Climate control issues
Common causes
- Sensor mounted near heat source
- Sensor contaminated
- Intermittent connection
Diagnostic steps
- Compare sensor reading to known temperature
- Check sensor location
- Inspect connector
Repair notes
Relocate or replace sensor.
Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0116
ECT Sensor 1 Circuit Range/Performance
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control
P0128
Coolant Thermostat Below Regulating Temperature