P0110Intake Air Temperature Sensor 1 Circuit Bank 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- Intake air temperature sensor 1 is the first air temperature sensor in the intake path; depending on the vehicle it is built into the mass air flow sensor, mounted near the air filter or, on some naturally aspirated GM engines, fitted in the intake manifold. Most versions are NTC thermistors in a 5 V divider: the hotter the air, the lower the signal voltage. P0110 is the general circuit fault. With a conventional analogue sensor most manufacturers report low and high signals separately (P0112/P0113), so P0110 mainly appears in two cases: with digital (SENT) sensors that combine air mass and temperature, where it stands for lost communication or an implausible status (Ford diesel 2023, after about 5 s), and in some Bosch systems as a collective code whose fault type byte tells open circuit from short to ground. The control module then uses a substitute temperature; some systems also limit torque.
- What you may notice
- Check engine light on
- Reduced power or torque limitation on some systems
- Otherwise usually inconspicuous; cold start may be slightly worse
- Likely causes
- LikelyConnector or wiring to the sensor open or corroded
- LikelySensor or mass air flow sensor with built-in temperature sensor faulty
- PossibleSensor supply or ground disturbed
- RareEngine control module faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €40 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.