P0096 on 2021-2024 Ford Bronco: IAT Sensor 2 Circuit Performance Explained

What's Unique About the 2021-2024 Ford BRONCO

The 2021-2024 Ford Bronco is particularly 🎬 Watch: A real-world example of this Bronco sensor fault susceptible to this code, a fact acknowledged by Ford in official Technical Service Bulletins (TSBs). The issue is often triggered by high ambient air temperatures. Furthermore, the TSBs note that aftermarket bumpers, winches, or other accessories that restrict airflow to the front of the vehicle, specifically the charge air cooler (intercooler), can cause this code to appear. This makes it a well-documented platform-specific problem often related to vehicle modifications rather than just a random component failure.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• Check Engine Light (MIL) illuminated.
• Reduced engine performance or sluggish acceleration.
• Rough idle.
• Decreased fuel economy.
• Hard starting, especially in cold weather.
• Engine hesitation.

Most Likely Causes

1. Faulty Intake Air Temperature (IAT) Sensor 2 🔴 High Probability Ford has issued TSBs (SSM 52702, SSM 51961) acknowledging a high prevalence of this code on 2021-2024 Broncos, often linked to sensor performance in high heat. The sensor is exposed to high temperatures from the turbocharger system, which can lead to failure over time.
   How to confirm: Use a scan tool to monitor live data for the IAT2 sensor. If the reading is irrational (e.g., -40°F on a hot day), doesn't change with engine temperature, or fails to correlate with IAT1 and ambient temp sensors on a cold soak, the sensor is likely bad. One owner on a Reddit forum noted their issue was solved by replacing the sensor after finding it contaminated with oil. 🎬 Learn how to clean your EcoBoost sensors to restore performance
   Typical fix: Replace the IAT Sensor 2. This sensor is typically located in the intake tract after the intercooler.
   Est. part cost: $20-$55
2. Restricted Airflow to Charge Air Cooler (Intercooler) 🟡 Medium Probability TSB SSM 51961 specifically calls out aftermarket bumpers, winches, and accessories that block airflow as a cause for this code on the Bronco. This is a common modification for Bronco owners, leading to a higher incidence of this issue. Forum users on Bronco6G.com have confirmed that dealers are denying warranty claims for this code when such accessories are present.
   How to confirm: Visually inspect the front of the vehicle. Check if a winch, light bar, or aftermarket bumper (like some from ADD - Addictive Desert Designs) is obstructing the intercooler located in the lower grille area.
   Typical fix: Remove the obstruction or replace the aftermarket part with one that allows for proper airflow. Some owners have resorted to installing a high-mount intercooler to resolve the issue caused by a bumper. Returning the vehicle to its stock configuration is the diagnostic step recommended by Ford.
   Est. part cost: $0 if removing an accessory
3. Wiring or Connector Issue ⚪ Low Probability Wiring can be damaged by engine heat, vibration, or off-road debris. The connector itself can become contaminated with oil or moisture, leading to poor contact.
   How to confirm: Visually inspect the harness and connector for the IAT Sensor 2. Check for corrosion, pushed-out pins, or frayed wires. Perform a 'wiggle test' on the harness while monitoring live sensor data to see if the reading fluctuates. Use a multimeter to test for continuity and proper voltage between the sensor connector and the PCM.
   Typical fix: Repair the damaged wiring or replace the connector pigtail.
   Est. part cost: $15-$40

Rare But Worth Checking

• Faulty Powertrain Control Module (PCM): This is extremely rare. The PCM should only be considered after all other possibilities, including the sensor and its entire circuit, have been exhaustively tested and ruled out. Sometimes a PCM software update from the dealer is required to fix logic errors.

Diagnosis Steps

1. Connect an OBD-II scanner and confirm P0096 is present. Note any other codes, especially P007B.
2. Review the vehicle's history. Ask if any aftermarket bumpers, winches, or light bars have been installed. If so, inspect for airflow obstruction to the intercooler as per TSB SSM 51961.
3. Using the scanner's live data function, monitor the IAT Sensor 2 reading. On a cold engine (off for 5+ hours), compare it to the IAT Sensor 1 and ambient air temperature readings. They should be within a few degrees of each other.
4. Start the engine and monitor the IAT2 reading. It should rise steadily as the engine warms up and the turbocharger operates. A typical IAT2 reading should be higher than the IAT1 reading once the engine is running.
5. Visually inspect the IAT Sensor 2 and its electrical connector for any signs of damage, corrosion, oil contamination, or loose connections.
6. If the sensor reading is illogical or stuck (e.g., -40 degrees), and the wiring appears intact, the sensor is the most likely culprit.
7. If the sensor has been replaced and the code returns, perform a continuity test on the wiring between the sensor connector and the PCM to rule out an open or short circuit. A 'wiggle test' on the harness can help identify intermittent connection issues.

Parts You'll Likely Need

• Intake Air Temperature Sensor 2 (OEM #DY-1267 (replaces DS7Z-12A697-A)) — This is the component that most frequently fails or performs out of range, triggering the P0096 code, as supported by Ford's TSBs and numerous owner accounts.
  Trusted brands: Motorcraft
  OEM price range: $35-$55.
  Aftermarket price range: $20-$40

Related Codes That Often Appear With This One

• P007B — This code, 'Charge Air Cooler Temperature Sensor Circuit Range/Performance (Bank 1)', is often set alongside P0096. Ford TSBs SSM 52702 and SSM 51961 list both codes as being caused by the same conditions, namely high ambient temperatures or airflow restriction to the intercooler.

Technical Service Bulletins (TSBs) & Recalls

• SSM 52702: Notes that 2021-2024 Bronco vehicles may exhibit DTCs P0096 and/or P007B, especially in high ambient air temperatures.
• SSM 51961: Links DTCs P0096 and/or P007B on 2021-2023 Broncos to restricted airflow from aftermarket bumpers and accessories, and advises returning the vehicle to stock to re-evaluate.

Platform-Specific Known Issues

• TSB SSM 52702 & SSM 51961: Ford issued these bulletins for 2021-2024 Bronco vehicles that show a check engine light with codes P0096 and/or P007B. The issue is noted to be more common in high ambient air temperatures. The bulletins advise technicians to first check for aftermarket accessories like bumpers or winches that may be restricting airflow to the charge air cooler and its sensors before proceeding with normal diagnostics.
• Aftermarket Bumper Conflict: There are multiple owner accounts on forums like Bronco6G.com detailing how aftermarket bumpers, particularly those from brands like Addictive Desert Designs (ADD), block the intercooler sufficiently to trigger codes P0096 and P007B. Dealers often will not cover the diagnosis or repair under warranty if such a bumper is installed.

Mechanic-Grade Diagnostic Values

• IAT Sensor Resistance (Bench Test) — expected: Resistance should change smoothly with temperature. As a general reference: ~2.5 kΩ at 77°F (25°C), ~3.4 kΩ at 70°F (21°C), ~1.8 kΩ at 100°F (38°C). Resistance decreases as temperature increases.. Failure: An open circuit (infinite resistance), a short (zero resistance), or resistance that does not change when heated with a hairdryer indicates a failed sensor.
• IAT Sensor Signal Wire Voltage (Key On, Engine Off) — expected: A voltage between 0.5V and 4.5V that corresponds to the ambient air temperature. For example, a reading of ~1.5V at 77°F (25°C) would be plausible.. Failure: A reading of 0V may indicate a short to ground or an open in the reference voltage supply. A reading of 5.0V indicates an open circuit on the signal or ground wire.

Wiring & Ground Locations

• IAT Sensor 2 — In the intake air tract after the charge air cooler (intercooler). On the 2.7L EcoBoost, it is typically located on the rear of the intake manifold and can be difficult to access.. This is the specific sensor for code P0096. It is frequently confused with the IAT1 sensor, which is located pre-turbo, often on the air filter housing.
• Connector C146 — An inline harness connector located behind the driver's side (LH) headlamp assembly.. This is a major engine harness connector. A poor connection, corrosion, or pushed-out pin within this connector could cause an intermittent open or short in the IAT2 circuit, leading to a P0096 code that persists after sensor replacement.
• Ground Point G102 — Located behind the driver's side (LH) headlamp assembly, near connector C146.. This is a potential chassis ground point for the IAT2 sensor circuit. A loose or corroded ground at this location could cause erratic sensor readings and trigger a performance code.

OEM Part Supersession History

• DS7Z-12A697-A → DY-1267 — Standard part revision and update by the manufacturer.
  Heads up: DY-1267 is the correct and current Motorcraft service part for this application. Using the older part number may result in receiving old stock.