P0099Low SeverityFuel System

Intake Air Temperature Sensor 2 Circuit Intermittent

What This Means

The second intake air temperature sensor signal is intermittent, cutting in and out. This creates unstable readings that can cause minor fuel mixture fluctuations.

Common Symptoms

Occasional fuel mixture change
Intermittent check engine light
Minor hesitation
No major drivability issues

Common Causes

Loose connector
Intermittent wire break
Corroded pins
Vibration damage
Failing sensor

Estimated Repair Cost

$50 – $250

Parts and labor (varies by vehicle and location)

Difficulty:Easy

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.