P1112 2002 Ford F150 Code - Intake Air Temperature Sensor Intermittent
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 2002 Ford F150 indicates Intake Air Temperature Sensor Intermittent .
- 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 2002 Ford F150 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 2002 Ford F150?
- 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 2002 Ford F150?
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 2002 Ford F150 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 2002 Ford F150 Code
1. What are the common symptoms of OBDII code P1112 in a 2002 Ford F150 related to the Intake Air Temperature Sensor Intermittent issue?
The common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling of the vehicle.
2. What could be the possible causes triggering the OBDII code P1112 in a 2002 Ford F150?
Potential causes may include a faulty intake air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the Engine Control Module (ECM).
3. How can I diagnose the Intake Air Temperature Sensor Intermittent issue causing OBDII code P1112 in my 2002 Ford F150?
You can diagnose the problem by using a scan tool to retrieve the fault codes, inspecting the intake air temperature sensor and its wiring for any visible damage, and performing electrical tests to check sensor functionality.
4. Can a dirty or malfunctioning air filter lead to the triggering of OBDII code P1112 in a 2002 Ford F150?
Yes, a dirty or clogged air filter can affect the intake air temperature readings and potentially lead to the intermittent operation of the sensor, triggering the P1112 fault code.
5. What are some repair tips for addressing the Intake Air Temperature Sensor Intermittent issue with OBDII code P1112 in a 2002 Ford F150?
Repair tips include checking and cleaning the air filter, inspecting and replacing the intake air temperature sensor if necessary, repairing any damaged wiring or connectors, and resetting the fault codes after repairs.
6. Is it safe to continue driving my 2002 Ford F150 with the OBDII code P1112 related to the Intake Air Temperature Sensor Intermittent issue?
It is not recommended to continue driving the vehicle with this issue as it can lead to further engine problems and reduced fuel efficiency. It is advisable to address the problem promptly.
7. How much does it typically cost to repair the Intake Air Temperature Sensor Intermittent issue triggering OBDII code P1112 in a 2002 Ford F150?
The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor, including sensor replacement and diagnostic fees.
8. Can resetting the ECM help clear the OBDII code P1112 caused by the Intake Air Temperature Sensor Intermittent problem in a 2002 Ford F150?
Resetting the ECM may temporarily clear the fault code, but if the underlying issue is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause of the problem.
9. Will a faulty Intake Air Temperature Sensor always trigger the OBDII code P1112 in a 2002 Ford F150?
Not necessarily. While a faulty sensor is a common cause of the P1112 code, other issues like wiring problems or ECM malfunctions can also trigger the code. Proper diagnosis is essential to pinpoint the exact cause.
10. How long does it take to replace the Intake Air Temperature Sensor in a 2002 Ford F150 to resolve the OBDII code P1112 issue?
The replacement of the intake air temperature sensor typically takes around 30 minutes to an hour, depending on the accessibility of the sensor and the level of expertise of the person performing the replacement.
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