What P0114 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.
How the engine computer detects it
Most versions are NTC thermistors in a 5 V divider: the hotter the air, the lower the signal voltage. P0114 covers an unsteady signal. Air temperature changes slowly, so rapid jumps point to the wiring rather than the air. Ford counts short excursions out of range that are each too brief for P0112/P0113 and sets the code after ten of them in one drive cycle. GM evaluates noise within the valid range: if the readings taken every 100 ms add up to more than 80 °C (176 °F) of movement within one second, in four of five seconds, the sample counts as failed. GM needs two trips. Typical culprit is a loose contact that opens with engine movement.
Written from public technical sources and not yet checked by a mechanic. How we write these pages
Symptoms
- Check engine light on
- Usually no noticeable symptoms
- Occasional brief stumble or rough idle possible
Common causes
- Loose contact at the connector (corrosion, weak terminal tension) Most likely
- Partly broken wire that opens with engine movement Most likely
- Sensor with internal contact problem Possible
- Electrical interference or ground fault Less likely
How to diagnose P0114
- Read every stored code with an OBD-II scanner. If misfire or fuel trim codes are there too, fix those first: they often cause this one.
- Inspect the parts involved: intake air temperature sensor, intake air temperature sensor wiring, mass air flow sensor.
- Work through the causes above from most to least likely, cheapest checks first.
- Clear the code and drive a full drive cycle to confirm the repair held.
Reading the code
- P
- Powertrain
- 0
- Generic (SAE) code
- 1
- Fuel and air metering
- 14
- Specific fault
Questions drivers ask
Can I drive with code P0114?
Usually yes for a short time, if the car drives normally, the temperature gauge reads normal and the check engine light is steady. If the light flashes, the engine loses power or overheats, or other warning lights come on, pull over and have it checked.
Will my car pass an emissions inspection with P0114?
Probably not in states that test vehicles with an OBD-II scan: an emissions-related code that keeps the check engine light on is usually an automatic fail. Rules differ by state and county, so check yours.
Will P0114 clear by itself?
The light can go off after several drive cycles without the fault, but the code returns if the cause is still there. After a repair, the readiness monitors need a full drive cycle before an inspection.
Can I fix P0114 myself?
Often yes, with an OBD-II scanner and basic tools. Difficulty: medium. Start with the cheapest checks before replacing expensive parts.
This page is general information, not a substitute for a professional diagnosis. Repair costs are rough estimates for parts and labor and vary by vehicle and region.