OBD-II Generic Error Code P2199: How to Fix It - Intake Air Temp Sensor 1/2 Correlation

Medium 45-60 minutes Medium Severity Verified June 2026
Error Code
P2199
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
45-60 minutes
Error code P2199 indicates a correlation issue between intake air temperature sensor 1 and sensor 2. This means the readings from the two sensors don't match, which can affect engine performance and fuel efficiency. This guide will help you diagnose and fix the problem.
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Tools You'll Need

How to Fix Error Code P2199

  1. Safety First

    Always work on a cold engine to avoid burns. Disconnect the battery before touching any sensors.
  2. Locate the Intake Air Temperature Sensors

  3. Visually Inspect Sensors and Wiring

  4. Clean the Sensors

    Do not use harsh chemicals or abrasive materials. Handle sensors carefully to avoid damage.
  5. Test Sensor Resistance

    Refer to your vehicle's service manual for exact resistance values at different temperatures.
  6. Clear the Code and Test Drive

Parts You May Need

Intake Air Temperature Sensor
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Intake Air Temperature Sensor
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Intake Air Temperature Sensor
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Intake Air Temperature Sensor
Check Price on Amazon
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When to Call a Professional

If the code returns after cleaning and testing, or if you are uncomfortable working with electrical components, consult a professional mechanic. Persistent P2199 may indicate a vacuum leak, intake manifold issue, or ECM fault.

Frequently Asked Questions

Can I drive with error code P2199?
You can drive, but it may cause poor fuel economy, rough idling, or reduced performance. It's best to diagnose and fix the issue promptly to avoid further damage.
What causes P2199?
Common causes include faulty intake air temperature sensors, dirty sensors, wiring issues, vacuum leaks, or after intercooler problems on turbocharged engines.
How much does it cost to fix P2199?
DIY cost is typically $20-$60 for a sensor. Professional repair ranges from $100-$200 including diagnostic and labor.
Can a dirty air filter cause P2199?
A very dirty air filter can affect airflow but rarely directly causes P2199. However, replacing the air filter is good maintenance.
Will disconnecting the battery reset P2199?
Disconnecting the battery may clear the code temporarily, but it will return if the underlying issue isn't fixed.