P0110: Intake Air Temperature Sensor 1 Circuit
Can you still drive? Yes, this is a low-severity code. The ECM will use a default air temperature value. You may notice slightly reduced performance in extreme temperatures.
What Does P0110 Mean?
Code P0110 indicates a malfunction in the intake air temperature (IAT) sensor circuit. The IAT sensor measures the temperature of incoming air so the ECM can adjust fuel delivery and ignition timing. P0110 is set when the ECM detects the sensor signal is erratic, irrational, or stuck at an extreme value.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Faulty IAT sensor
- Corroded or damaged sensor connector
- Open or shorted wiring in IAT circuit
- IAT sensor contaminated with oil or dirt
- Poor ground connection
Symptoms
- Check engine light on
- Slightly rough idle in cold weather
- Minor decrease in fuel economy
- Hard starting in extreme temperatures
Diagnostic Steps
- 1Read IAT sensor temperature on scan tool and compare to ambient temperature with engine cold
- 2Inspect IAT sensor connector for corrosion or loose fit
- 3Measure sensor resistance and compare to temperature-resistance chart in service manual
- 4Check 5V reference and ground circuits at the sensor connector
- 5Clean the IAT sensor element if contaminated
Recommended Parts & Tools
intake air temperature sensor
MAF sensor cleaner
electrical contact cleaner
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $20 - $150 |
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Chat with AI About P0110Commonly Affected Vehicles
Related Recalls
1 Active Recall — 2026 Ford F-150
The following NHTSA safety recalls have been issued for this vehicle. Contact your dealer to check if your vehicle is affected.
ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
Ford Motor Company (Ford) is recalling certain 2021-2026 F-150, 2022-2026 F-250 SD, F-350 SD, F-450 SD, F-550 SD, Maverick, 2024-2026 Ranger, 2023-2026 F-600 SD, 2022-2027 Lincoln Navigator, Expedition, and 2026 E-Transit vehicles. When towing a trailer, the integrated trailer module (ITRM) may lose communication with the vehicle, possibly causing a loss of brake and turn signal lights, or a loss of brake function. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, " Lamps, Reflective Devices, and Associated Equipment."
Remedy: The integrated trailer module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters are expected to be mailed March 17, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26C10. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning March 17, 2026.
Data provided by the National Highway Traffic Safety Administration (NHTSA).
Frequently Asked Questions
Where is the IAT sensor located?
The IAT sensor is typically located in the intake air duct between the air filter and the throttle body. On many modern vehicles it is integrated into the mass airflow (MAF) sensor.
Is P0110 the same as P0113?
No. P0110 is a general circuit malfunction, while P0113 specifically indicates a high input (open circuit). P0110 may be set for erratic or irrational readings that do not fit P0112 or P0113.
Community Fix Reports
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