P0110 code meaning
Intake Air Temperature Sensor 1 Circuit Bank 1
Powertrain system Generic code P01xx codes Check engine light
What P0110 means
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.
P0110 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairAfter a drive cycle
Symptoms of P0110
- Check engine light on
- Reduced power or torque limitation on some systems
- Otherwise usually inconspicuous; cold start may be slightly worse
Common causes of P0110
- Most likelyConnector or wiring to the sensor open or corroded
- Most likelySensor or mass air flow sensor with built-in temperature sensor faulty
- PossibleSensor supply or ground disturbed
- Less likelyEngine control module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Intake air temperature sensorIntake air temperature sensor wiringMass air flow sensor
What each part of P0110 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 1 | Area: fuel and air metering. |
| 10 | The exact fault in that area. |
What to do next
- Note P0110 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0110
What does P0110 mean?
P0110 means "Intake Air Temperature Sensor 1 Circuit Bank 1". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P0110?
Drive gently and only to a workshop. With P0110 the car can go into limp mode (reduced power) to protect itself.
Will P0110 fail an emissions test?
Yes, it can. P0110 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0110 to fix?
Difficulty: easy. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0110 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.