P1112 2011 Ford Fusion Code - Intake Air Temperature Sensor Intermittent Condition
Quick Answer
The IAT sensor is a thermistor device in which resistance changes with temperature. Common causes include Faulty Intake Air Temperature Sensor, Intake Air Temperature Sensor harness is open or shorted, Intake Air Temperature Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1112 2011 Ford Fusion indicates Intake Air Temperature Sensor Intermittent Condition.
- Common causes
- Common causes include Faulty Intake Air Temperature Sensor, Intake Air Temperature Sensor harness is open or shorted, Intake Air Temperature Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1112 2011 Ford Fusion Description
Thermistor-type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow. Voltage that is dropped across a fixed resistor in a series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The IAT sensor provides air temperature information to the PCM. The PCM uses the air temperature information as a correction factor in the calculation of fuel, spark, and air flow.
The IAT sensor provides a quicker temperature change response time than the ECT or CHT sensor.
Currently there are 2 types of IAT sensors used, a stand alone, non-integrated type and an integrated type. Both types function the same, however the integrated type is incorporated into the mass air flow (MAF) sensor instead of being a stand-alone sensor.
What are the Possible Causes of the DTC P1112 2011 Ford Fusion?
- Faulty Intake Air Temperature Sensor
- Intake Air Temperature Sensor harness is open or shorted
- Intake Air Temperature Sensor circuit poor electrical connection
- Damaged Powertrain Control Module (PCM)
How to Fix the DTC P1112 2011 Ford Fusion?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1112 2011 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1112 2011 Ford Fusion Code
1. What does the OBDII code P1112 mean on a 2011 Ford Fusion?
P1112 indicates an "Intake Air Temperature Sensor Intermittent Condition," meaning the sensor is sending erratic or inconsistent signals to the engine control module (ECM).
2. What are the symptoms of code P1112 in a 2011 Ford Fusion?
Common symptoms include poor engine performance, rough idling, reduced fuel efficiency, and possibly an illuminated check engine light.
3. What causes the P1112 code to appear on a 2011 Ford Fusion?
The code can be caused by a faulty intake air temperature (IAT) sensor, damaged wiring or connectors, or an electrical issue such as a short or open circuit.
4. Can I drive my 2011 Ford Fusion with the P1112 code?
While the car may still run, driving with this code can lead to reduced performance and fuel efficiency. Prolonged driving without addressing the issue may cause further engine problems.
5. How do I diagnose the P1112 code in a 2011 Ford Fusion?
Start by visually inspecting the IAT sensor and its wiring for damage. Use a multimeter to test the sensor's resistance and ensure it's within the manufacturer’s specifications.
6. How do I fix the P1112 code on a 2011 Ford Fusion?
Repairs may involve replacing the faulty IAT sensor, repairing damaged wiring or connectors, or addressing any electrical issues affecting the sensor circuit.
7. Where is the intake air temperature sensor located on a 2011 Ford Fusion?
The IAT sensor is usually located on the intake manifold or integrated into the mass air flow (MAF) sensor, depending on the engine configuration.
8. How much does it cost to repair the P1112 code on a 2011 Ford Fusion?
The cost can vary. Replacing the IAT sensor typically costs $50–$200, including parts and labor. Wiring repairs may add to the cost if needed.
9. Can a dirty air filter cause the P1112 code on a 2011 Ford Fusion?
While unlikely, a severely clogged air filter can disrupt airflow and potentially contribute to sensor issues. It’s a good idea to check and replace the air filter if dirty.
10. Will clearing the P1112 code fix the problem on a 2011 Ford Fusion?
Clearing the code will only temporarily turn off the check engine light. The underlying issue must be resolved to prevent the code from returning.
Discuss the causes and fixes for P1112 2011 Ford Fusion OBDII Code
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