P0113: Intake Air Temperature Sensor 1 Circuit High
Quick Answer
Safe to drive (short-term)
P0113 means the intake air temperature (IAT) sensor is reporting an unusually high voltage, which the ECU interprets as extremely cold air temperatures that do not match actual conditions. This almost always points to a wiring fault, a failed sensor, or a disconnected electrical connector rather than a real temperature problem.
- Severity
- Low · Emissions
- Estimated repair cost
- From €15 to €145+, varies by vehicle
€15 or €145, depending on your car.
- Clean and reconnect IAT sensor connector€15–€45
- Repair wiring to IAT sensor€45–€145
A scan shows whether P0113 is really stored on your car, which codes sit next to it and how urgent each one is.
A scan needs a Bluetooth OBD2 adapter (Bluetooth LE on iPhone), about €25-60; the built-in demo runs without one. See which adapter to buy
What does P0113 mean?
P0113 is a emissions-related diagnostic trouble code classified as low severity.
What are the symptoms of P0113?
- Check engine light on
- Slightly rough idle, especially on cold starts
- Marginally higher fuel consumption
- Possible hard starting in cold weather
- Minor hesitation on acceleration
What causes P0113?
Disconnected or corroded IAT sensor connector
: high
Open circuit in IAT sensor wiring
: high
Faulty IAT sensor (internal open circuit)
: medium
Damaged wiring harness near the air intake
: medium
Faulty ECU (extremely rare)
: low
Is it safe to drive with P0113?
Generally yes, for short-term driving. Generally safe to drive. The ECU will use a default air temperature value, which may slightly reduce fuel efficiency and performance. Repair at your convenience but do not ignore indefinitely.
How do you diagnose P0113?
- Locate the IAT sensor - it is typically in the air intake tube between the air filter box and the throttle body, or integrated into the MAF sensor housing
- Inspect the electrical connector for corrosion, bent pins, or disconnection. Clean with electrical contact cleaner and reseat the connector firmly
- Read the IAT sensor value with a scan tool. With the engine cold, it should match the ambient temperature. A reading of -40 degrees C indicates an open circuit
- Measure resistance across the IAT sensor terminals. At 20 degrees C, resistance is typically 2,000-3,000 ohms. An open circuit (infinite resistance) means the sensor is faulty
- If the sensor tests fine, check wiring continuity between the sensor connector and the ECU. Repair any open or damaged wires
How much does P0113 cost to fix?
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| Clean and reconnect IAT sensor connector | €0–€5 | €15–€40 | €15–€45 | Easy |
| Replace IAT sensor | €10–€50 | €15–€50 | €25–€100 | Easy |
| Repair wiring to IAT sensor | €5–€25 | €40–€120 | €45–€145 | Moderate |
Prices estimated as of October 2026. Costs vary by region, vehicle, and shop.
P0113 in the Skanyx app: what real cars show
Counts from fault-code scans in the Skanyx app in the 12 months to October 2026: 20 of the 806 cars that stored at least one code had P0113 stored.
- P0102 was stored on the same car in 10 of them
One car counts once, however often it was scanned. Figures below 15 cars are not shown. This is the fleet of one app's users, mostly in Europe, not a survey of the whole market.
P0113 on specific vehicles
Ford
Ford Focus
2004-2016
On the 1.6 TDCi engine, the IAT sensor is integrated into the MAF sensor. If the MAF connector comes loose or corrodes, both P0113 and MAF codes can appear. Check the connector first before replacing the entire MAF unit.
Source: ms-motorservice.com, en.wikipedia.org
Peugeot
Peugeot 208
2012-2019
Check the intake air temperature sensor's connector and wiring before replacing the sensor.
P0113 on Volkswagen
Volkswagen Golf
Related diagnostic codes
Common questions about P0113
- What does P0113 mean?
- P0113 indicates the intake air temperature sensor circuit is reading too high a voltage, which the ECU interprets as extremely cold air (often -40 degrees C). This is almost always an electrical problem - a disconnected plug, broken wire, or failed sensor - rather than an actual temperature issue.
- Is P0113 serious?
- P0113 is a low-severity code. The ECU substitutes a default air temperature value, so the engine still runs. You may notice slightly higher fuel consumption and minor performance changes. It should be fixed but is not urgent.
- How much does it cost to fix P0113?
- This is one of the cheapest codes to repair. An IAT sensor costs 10-50 EUR for the part (about 25-100 EUR fitted) and is usually simple to replace. If the issue is just a loose connector, the fix is free. Wiring repairs may cost 45-145 EUR if the harness is damaged.
- Where is the IAT sensor located?
- The IAT sensor is usually in the air intake tube between the air filter box and the throttle body. On many modern vehicles, it is integrated into the mass air flow (MAF) sensor housing. Check your vehicle manual for the exact location.
Read our detailed guides
Sources
- ms-motorservice.com ms-motorservice.com/cn/en/technipedia/air-mass-sensor-with-frequency-output-75
- en.wikipedia.org en.wikipedia.org/wiki/Ford_Focus_(third_generation)
- wiki.ross-tech.com wiki.ross-tech.com/wiki/index.php/16497/P0113/000275