Chrysler 300 Intake Air Temperature Sensor Guide (2005-2023)
Having engine problems with your Chrysler 300? A small, inexpensive sensor could be the cause.
- A bad IAT sensor on a Chrysler 300 commonly causes a check engine light with code P0113.
- Symptoms include poor gas mileage, rough idle, and hesitation.
- Replacement is extremely easy for a DIYer and can be done in under 15 minutes.
- A quality aftermarket brand like Standard Ignition is a cost-effective alternative to the more expensive OEM Mopar part.
Is a Bad Intake Air Temperature Sensor Causing Your Chrysler 300's Problems?
If your Chrysler 300 is running rough, getting bad gas mileage, or has the check engine light on, a faulty Intake Air Temperature (IAT) sensor might be the culprit. This sensor is a common failure point, but the good news is that it's an easy and affordable part to replace yourself. This article covers the symptoms, replacement costs, and how to choose the right aftermarket part for your 2005 to 2023 Chrysler 300.
Symptoms of a Failing IAT Sensor
When the IAT sensor fails, it sends wrong information to your car's computer. This can cause a range of noticeable issues. The most common sign is the check engine light coming on. You might see trouble codes like P0112, P0113, or P0114 when you scan 🎬 Watch: Troubleshooting P0113 codes on your Chrysler 300 the vehicle. Other common symptoms include:
- Poor Fuel Economy: The engine may use more fuel than necessary because the computer gets an incorrect temperature reading.
- Rough Idle: Your car may idle unevenly or feel like it's stumbling when stopped.
- Hard Starting: The engine might have trouble starting, especially in cold weather, because the fuel mixture isn't properly enriched.
- Hesitation or Lack of Power: You may notice sluggish acceleration or a general lack of engine power.
A Note on Sensor Location
On most Chrysler 300 engines, like the 3.6L V6 and 5.7L HEMI V8, the IAT sensor is a separate part located in the plastic air intake tube between the air filter box and the 🎬 See this video for the exact sensor location and removal engine's throttle body. It is typically a simple two-wire sensor that twists into place. It is not usually combined with the MAP sensor on these models.
Choosing a New Aftermarket IAT Sensor
For a simple part like an IAT sensor, an aftermarket version from a quality brand offers great value. The technology is straightforward—it's a thermistor that changes resistance with temperature—so you don't always need to pay the premium for an OEM Mopar part.
- Premium Aftermarket (e.g., Standard Ignition): Brands like Standard Motor Products (SMP) are well-regarded in the industry. They produce parts that are designed to be direct-fit OE replacements, using high-quality materials that hold up under engine bay conditions. Reviews for Standard Ignition sensors on similar Chrysler/Dodge vehicles are generally positive, confirming good fit and function.
- OEM (Mopar): This is the original part your car came with. It guarantees perfect fit and function but usually comes at a higher price point. If you prefer to stick with factory parts, Mopar is the way to go.
Cost to Replace Chrysler 300 IAT Sensor
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (e.g., Standard Ignition) | $22 - $57 |
| New OEM (Mopar) | $30 - $60 |
| Shop Labor | $50 - $150 |
| DIY Total | $22 - $57 |
| Shop Replacement Total | $72 - $207 |
Frequently Asked Questions
Can I replace the IAT sensor myself?
Yes, this is one of the easiest repairs you can do. The sensor is usually fully exposed in the engine bay. The job requires no special tools—just unplug the electrical connector, give the old sensor a quarter-turn to remove it, and install the new one. The entire process takes about 10 minutes.
🎬 Watch: How to properly install your new air temperature sensorAre there any recalls for the Chrysler 300 IAT sensor?
No, as of early 2026, there are no specific recalls or widespread Technical Service Bulletins (TSBs) from Chrysler or NHTSA for the Intake Air Temperature sensor on the 2005-2023 Chrysler 300.
What is the difference between an IAT and a MAP sensor?
The IAT sensor measures air temperature, while the MAP (Manifold Absolute Pressure) sensor measures air pressure inside the intake manifold. Your Chrysler 300's computer uses data from both sensors to calculate the perfect air-fuel ratio. On these cars, they are typically two separate parts.
Will a new IAT sensor turn off my check engine light?
After replacing the faulty sensor, the check engine light should turn off after a few driving cycles. For an immediate result, you can clear the codes using an OBD-II scanner or by disconnecting the battery's negative terminal for about 15 minutes. Using a scanner is the preferred method.
Helpful Videos
Technical Specifications
OEM Part Numbers: 5149279AC 5149279AB 4606487AB
The Intake Air Temperature (IAT) sensor is a two-terminal thermistor that installs into the air intake duct. Its electrical resistance changes based on air temperature, sending a variable voltage signal to the vehicle's computer.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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