P1112 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 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 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?
- 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?
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 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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Information for Specific Makes
- P1112 Acura — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Audi — HO2S Control Bank 1 System Too Rich
- P1112 BMW — Engine Coolant Temperature Radiator Outlet Sensor High Input
- P1112 Buick — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Cadillac — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Chevrolet — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Chrysler — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Dodge — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Ford — Intake Air Temperature Sensor Intermittent Condition
- P1112 GMC — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Honda — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Hyundai — Manifold Differential Pressure Sensor
- P1112 Isuzu — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Jeep — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 KIA — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Lincoln — Intake Air Temperature Sensor Intermittent Condition
- P1112 Mazda — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Mercury — Intake Air Temperature Sensor Intermittent Condition
- P1112 MINI — Engine Coolant Temperature Radiator Outlet Sensor High Input
- P1112 Pontiac — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Saturn — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Subaru — Atmospheric pressure sensor range/performance problem
- P1112 Suzuki — Intake Air Temperature Sensor Circuit Intermittent Low Voltage
- P1112 Volkswagen — HO2S Control Bank 1 System Too Rich
- P1112 Volvo — Outside Temperature Sensor Signal Too Low Or Too High
Frequently Asked Questions about P1112 Code
No Frequently Asked Questions about P1112 Code found.
Discuss the causes and fixes for P1112 OBDII Code
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Hello
Thx a lot for your support
I found my car bump is full upnormally
Car repair man recommended " change thermostat " I need your help
The code is 1112
My car opel astra H 2008
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