Intake Air Temperature (IAT) Sensor Circuit Intermittent
The P0114 code means the vehicle's onboard diagnostic system has detected: Intake Air Temperature (IAT) Sensor Circuit Intermittent. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $20 - $150 (IAT sensor $15-$60; wiring repair $50-$100)
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What Are the Symptoms of P0114?
- Check Engine Light on, may be intermittent
- Slight fluctuations in idle speed
- Minor fuel economy changes
- Engine may run slightly rich or lean intermittently
- No major drivability issues in most cases
What Causes P0114? (Most Likely First)
- Loose or corroded IAT sensor connector Very High
- Damaged wiring with intermittent connection High
- Failing IAT sensor with erratic output Moderate
- Water or debris contamination at the sensor connector Moderate
- Poor ground connection for the sensor Low
Can I Still Drive with P0114?
Yes, but fix soon. P0114 is rated low severity. It is not an immediate stop-driving fault, but it will not clear itself — book the repair rather than ignoring the light.
Frequently Asked Questions
Can I drive with code P0114?
Yes, you can drive normally. The IAT sensor provides supplemental air temperature data. The PCM can compensate using other sensors, so drivability will be largely unaffected.
Where is the IAT sensor located?
The IAT sensor is usually located in the air intake duct between the air filter box and the throttle body. On some vehicles, it is built into the MAF sensor as a combined unit.
What makes this code intermittent vs. a fixed fault?
An intermittent code means the signal drops out or spikes randomly rather than being consistently wrong. This is almost always a connector or wiring issue rather than a complete sensor failure.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P0114?
-
Inspect the IAT sensor connector for loose pins, corrosion, or damage. Wiggle the connector while monitoring IAT temperature on a scan tool.
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Check IAT sensor reading with a cold engine. It should match ambient temperature (within 10 degrees F). Erratic jumps indicate an intermittent fault.
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Measure IAT sensor resistance. At 68 degrees F it should be approximately 2,000-3,000 ohms. At 212 degrees F it should be approximately 200-300 ohms.
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Inspect the wiring for chafing or damage, especially where it routes near the intake manifold or engine accessories.
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Clean the connector with electrical contact cleaner and apply dielectric grease to prevent future corrosion.
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Which Vehicles Commonly Get P0114?
- 2005-2015 Ford F-150 (various engines)
- 2007-2016 Chevrolet Silverado (5.3L V8)
- 2006-2014 Honda Civic (1.8L, 2.0L)
- 2008-2016 Toyota Camry (2.5L)
- 2010-2018 Hyundai Sonata (2.4L)
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