TorqueMech OBD Code Guide
P0099 - Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic Bank 1
The PCM saw a temperature-sensor signal outside the expected range, often caused by a bad sensor, damaged wiring, or an actual temperature problem.
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Code Overview
The PCM saw a temperature-sensor signal outside the expected range, often caused by a bad sensor, damaged wiring, or an actual temperature problem.
Common Causes
- Faulty temperature sensor
- Open or shorted wiring
- Poor connector contact
- Real temperature or airflow issue
Diagnostic Steps
- Compare sensor temperature data to ambient or actual engine temperature
- Inspect the sensor connector for spread terminals or moisture
- Check the signal and reference voltage for opens or shorts
- Inspect for airflow or cooling issues that could drive a real temperature fault
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