P0113Intake Air Temperature Sensor 1 Circuit High 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. P0113 means the signal is above its valid range. With an NTC sensor that is typically an open circuit – connector off, broken wire, open sensor or missing ground – or a short to a voltage source, and the module would read an extremely cold value (GM about −60 °C). Documented limits: Ford petrol above 4.96 V for 5 s, Ford diesel above 4.91 V, GM above about 127 kilohms. A classic cause is a sensor left unplugged after an air filter change; one manufacturer bulletin describes broken wires at the connector caused by harness tension. Monitoring is continuous, GM needs two trips.
- What you may notice
- Check engine light on
- Usually hardly noticeable
- Slightly richer mixture and higher consumption possible
- Torque limitation on some systems
- Likely causes
- LikelyConnector unplugged or loose, or wire broken
- LikelySensor open internally
- PossibleSensor return (ground) wire open
- RareSignal wire shorted to a voltage source
- 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: €20 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.