Ford Bronco (2021-2022) Engine Intake Air Temperature Sensor Guide
Is a faulty intake sensor causing your Bronco's Check Engine Light or poor performance?
- A bad IAT sensor is a primary cause of a Check Engine Light with codes P0111, P0112, or P0113 on a Ford Bronco.
- Replacement is extremely easy for a DIYer, requiring no special tools and taking less than 15 minutes.
- Be aware that aftermarket cold air intakes can sometimes cause IAT sensor codes if the sensor does not seal properly in the new housing.
- There are no active recalls or common TSBs from Ford specifically for IAT sensor failure on the 2021-2022 Bronco.
Is your Ford Bronco running rough or guzzling gas?
A small, inexpensive sensor could be the culprit. The Intake Air Temperature (IAT) sensor provides crucial data to your Bronco's engine computer. When it fails, it can cause noticeable issues. Fortunately, this is one of the easiest and cheapest parts to replace yourself.
Symptoms of a Failing Intake Air Temperature Sensor
When the IAT sensor sends incorrect information or no information at all, the engine computer can't properly manage the fuel mixture. This often leads to several common symptoms.
- Check Engine Light: This is the most common sign. The computer will detect a problem with the sensor's signal and trigger a light on your dashboard. Common trouble codes associated with a bad IAT sensor include P0111 (Circuit Range/Performance), P0112 (Circuit Low), and P0113 (Circuit High).
- Poor Fuel Economy: If the sensor incorrectly reads that the air is colder than it is, the computer will inject more fuel than necessary, causing poor gas mileage.
- Rough Idle and Hesitation: An incorrect air-fuel mixture can lead to a rough or unstable idle. You might also notice hesitation or a lack of power when you accelerate.
- Difficulty Starting: Especially during a cold start, a bad sensor can prevent the computer from creating the right fuel mixture for startup, making the engine hard to start.
Vehicle-Specific Issues & Known Problems
While there are no official recalls or widespread Technical Service Bulletins (TSBs) for the IAT sensor on the 2021-2022 Ford Bronco, owners have reported some issues. Some owners who have installed aftermarket cold air intakes have experienced a Check Engine Light with code P0111, suggesting that an improper seal or sensor fit in the new intake tube can cause problems. In other cases, rodents have been known to chew through the sensor's wiring, leading to a P0113 code and a no-start condition.
Choosing the Right Aftermarket Sensor
For a simple but important part like the IAT sensor, you have a couple of good options.
- OEM (Motorcraft): The original equipment part (Ford Part No. DS7Z-12A697-A) is a guaranteed fit and quality choice, though it typically costs more.
- Premium Aftermarket (Standard Ignition): Brands like Standard Motor Products (which makes Standard Ignition) are well-regarded in the industry. They produce direct-fit replacement parts that meet or exceed OEM specifications, offering a reliable and cost-effective alternative. For a sensor like this, a quality aftermarket part is a dependable option for most owners.
Cost of Replacing a Ford Bronco IAT Sensor
| Part Type | Estimated Cost |
|---|---|
| New OEM (Motorcraft) | $19 - $30 |
| New Aftermarket (Standard Ignition) | $15.85 |
| Used OEM | $10 - $20 |
| Shop Labor | $25 - $50 |
DIY Pro Tip: An Easy 5-Minute Job
Replacing the IAT sensor on a 2021-2022 Bronco is extremely simple. The sensor is located on the air filter housing or the intake tube and is held in place by a simple quarter-turn lock. You don't need special tools. Simply disconnect the electrical connector, rotate the old sensor counter-clockwise to unlock it, and pull it out. Install the new sensor by pushing it in and turning it clockwise to lock. This is a great first DIY repair for any Bronco owner.
Frequently Asked Questions
Where is the IAT sensor located on my Ford Bronco?
The IAT sensor is located in the air intake system, typically mounted directly on the air filter box or the plastic intake tube leading to the turbocharger. It is easily accessible in the engine bay.
Can I just clean the sensor instead of replacing it?
Sometimes, if the sensor is just dirty with oil or debris, cleaning it with a dedicated Mass Airflow Sensor cleaner may restore its function. However, if the internal thermistor has failed, which is common, cleaning will not help and the sensor must be replaced. Given the low cost of a new sensor, replacement is often the most reliable solution.
What happens if I don't replace a bad IAT sensor?
You can continue to drive the vehicle, but you will experience symptoms like poor fuel economy, rough running, and reduced power. More importantly, your vehicle will not pass an emissions test with an active Check Engine Light, and running a consistently rich or lean fuel mixture can, over the long term, contribute to other issues like fouled spark plugs or catalytic converter damage.
My dealership quoted me over $700 to replace this sensor. Why?
Some owners have reported receiving very high quotes for this repair from dealerships. This is likely not for the part itself, but includes high diagnostic fees, shop supply charges, and a standard labor charge that doesn't reflect the job's true simplicity. For this specific part, a DIY replacement or a visit to a trusted independent mechanic is a much more economical choice.
Technical Specifications
OEM Part Numbers: DS7Z-12A697-A DY-1267
This is a 2-pin thermistor sensor that mounts in the engine's air intake tract. It functions by changing its electrical resistance in response to air temperature changes.
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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.
- Ford Bronco:
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- Is your Ford Bronco running rough or guzzling gas?
- Symptoms of a Failing Intake Air Temperature Sensor
- Vehicle-Specific Issues & Known Problems
- Choosing the Right Aftermarket Sensor
- Cost of Replacing a Ford Bronco IAT Sensor
- DIY Pro Tip: An Easy 5-Minute Job
- Frequently Asked Questions
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