What does P0110 mean?
The intake air temperature (IAT) sensor tells the computer how warm the incoming air is. Cold air is denser and needs more fuel. On many cars the IAT is built into the MAF sensor.
The computer has detected an electrical fault in the temperature sensor circuit.
Codes are a starting point. They tell you which test failed, not which part to replace. Check for other stored codes and fix those in a sensible order.
Symptoms
- Check engine light
- Slight drop in fuel economy
- Hard starting in extreme temperatures (sometimes)
Common causes
- Open or shorted wiring
- Corroded connector
- Failed sensor
How to diagnose P0110
- Check live data for a stuck or extreme reading.
- Inspect the connector and harness.
- Test sensor resistance against spec.
- Compare IAT with coolant temperature after the car has sat overnight. They should be within a few degrees.
- Check sensor resistance against spec.
How to fix it
- Repair connector/wiring
- Replace the IAT sensor (or MAF assembly if it is integrated)
Estimated repair cost
Likely repairs for P0110 run from about $50 to $450, depending on the cause.
| Repair | Typical range (parts + labor) |
|---|---|
| Diagnostic fee (scan + testing) | $100 - $200 |
| Intake air temperature sensor | $50 - $200 |
| Mass airflow sensor replacement | $150 - $450 |
These are rough US estimates for an independent shop in 2026, based on typical parts prices and standard labor times. Dealers, big trucks, luxury brands and high-cost areas often run higher. They are not quotes. Use the repair cost estimator to adjust for your vehicle.
How serious is P0110?
Low severity
Safe to drive in most cases.
P0110 FAQ
What does P0110 mean?
P0110 stands for "Intake Air Temperature Sensor 1 Circuit (Bank 1)". The intake air temperature (IAT) sensor tells the computer how warm the incoming air is.
Can I drive with a P0110 code?
Safe to drive in most cases.
How much does it cost to fix P0110?
It depends on the cause. The likely repairs for P0110 range from about $50 to $450 at an independent shop in the US, plus a diagnostic fee of roughly $100-$200. These are rough estimates; dealer prices and some vehicles run higher.
What is the most common cause of P0110?
The most common causes are: open or shorted wiring; corroded connector; failed sensor.