Code result
P0071
Ambient Air Temperature Sensor Range/Performance
Moderate severity
What it means
The ambient air temperature reading is electrically valid but implausible compared to other temperature sources (intake air temp, coolant at cold start).
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Sensor reading drifted
highOne of the most commonly reported causes for this code — check this first.
Sensor exposed to engine heat
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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