P0113 — Intake air temperature (IAT) sensor circuit high input

What this code generally means, its most common causes, and how serious it is.

TYPE: GENERICSYSTEM: AIR-FUEL MIXTURE

What does the code P0113 mean?

The intake air temperature (IAT) sensor — often built into the MAF sensor — is sending a signal that corresponds to an implausibly high temperature, usually a sign of an open circuit rather than a real reading.

Common possible causes

Damaged or disconnected wiring — the most common cause of an "open" signal.
A corroded connector — poor electrical contact at the sensor.
A failing IAT (or MAF) sensor — the internal element has stopped working correctly.

General severity

Generally minor — not urgent

This code mainly affects the accuracy of air-fuel metering, not the ability to drive. The car is usually still drivable, possibly running slightly less optimally when cold.

This is still a general severity for this code, not a diagnostic for your car. Only a real read of your codes, with your mileage and vehicle history, can tell what's really going on.

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Meca doesn't replace an in-person check by a professional. For any serious sign (a flashing light, a major loss of power, a fuel smell), see a mechanic promptly.

Frequently asked questions

What's the difference between P0113 and P0112?

P0113 signals an implausibly high reading (often an open circuit); P0112 signals an implausibly low one (often a short). Both involve the same sensor.

Should I stop driving?

No, that's generally not necessary for this code alone. A check is still worthwhile to avoid it affecting fuel use or cold starts.

Can it trigger other codes?

Yes, a bad air-temperature reading can skew fuel metering and sometimes contribute to lean or rich mixture codes.