P0114Intake Air Temperature Sensor 1 Circuit Intermittent/Erratic Bank 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- 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. 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 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.
- What you may notice
- Check engine light on
- Usually no noticeable symptoms
- Occasional brief stumble or rough idle possible
- Likely causes
- LikelyLoose contact at the connector (corrosion, weak terminal tension)
- LikelyPartly broken wire that opens with engine movement
- PossibleSensor with internal contact problem
- RareElectrical interference or ground fault
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.