Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P1110 - Intake Air Temperature (IAT) Sensor, Open Or Short Circuit: Condition
DTC is set when input voltage from Intake Air Temperature (IAT) mounted in Dynamic Chamber (D/C) is less than .14 volt or greater than 4.9 volts when intake air temperature is greater than 14°F (-10°C). Possible causes are:
- IAT sensor malfunction.
- Open or short circuit between terminal "A" on IAT sensor and terminal No. 2C on Engine Control Module (ECM).
- Open or short circuit between terminal "B" on IAT sensor and terminal No. 3AB on Engine Control Module (ECM).
DTC is set when input voltage from Intake Air Temperature (IAT) mounted in Lysholm Compressor (L/C) is greater than 4.9 volts when intake air temperature is greater than 32°F (0°C). Possible causes are:
- IAT sensor malfunction.
- Open or short circuit between terminal "A" on IAT sensor and terminal No. 2K on Engine Control Module (ECM).
- Open or short circuit between terminal "B" on IAT sensor and terminal No. 3AB on Engine Control Module (ECM).
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.