P0113: Intake Air Temperature Sensor 1 Circuit High
Low SeveritySafe to drive (short-term)Emissions
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.
What does P0113 mean?
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.
P0113 is a emissions-related diagnostic trouble code classified as low severity. When your vehicle's ECU detects this condition, it stores P0113 and illuminates the check engine light.
What are the symptoms of P0113?
If your vehicle has triggered P0113, you may notice one or more of these symptoms:
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?
Here are the most common causes of P0113, ranked by how likely they are to be the culprit:
highDisconnected or corroded IAT sensor connector
highOpen circuit in IAT sensor wiring
mediumFaulty IAT sensor (internal open circuit)
mediumDamaged wiring harness near the air intake
lowFaulty ECU (extremely rare)
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?
Follow these steps to pinpoint the root cause of 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 costs for P0113 vary depending on the root cause and your vehicle. Here are typical estimates:
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 March 2026. Costs vary by region, vehicle, and shop.
P0113 on specific vehicles
P0113 behaves differently depending on your vehicle. Select your car below for model-specific causes, known issues, and adjusted cost estimates:
P0113 on Ford Focus
Ford Focus • 2005-2024
On the 1.6 TDCi and 2.0 TDCi engines, 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.
What causes P0113 on a Ford Focus?
Ford FocusCorroded MAF/IAT combined sensor connector
Ford FocusWater ingress into the air intake housing damaging the sensor
P0113 on Peugeot 208
Peugeot 208 • 2012-2024
The 1.2 PureTech and 1.6 BlueHDi engines have the IAT sensor in the air intake duct. Connector corrosion is common in humid climates. The sensor itself is inexpensive and easy to access on these models.
What causes P0113 on a Peugeot 208?
Peugeot 208IAT connector corrosion from moisture in the engine bay
Peugeot 208Sensor wiring chafed against engine components
P0113 repair cost for Peugeot 208
Estimated costs for Peugeot 208 ownersadjusted lower than average due to Peugeot-specific parts pricing
Repair
Parts Cost
Labor Cost
Total Estimate
DIY Difficulty
Clean and reconnect IAT sensor connector
€0–€5
€14–€36
€14–€41
Easy
Replace IAT sensor
€9–€45
€14–€45
€23–€90
Easy
Repair wiring to IAT sensor
€5–€23
€36–€108
€41–€131
Moderate
Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.
P0113 on Volkswagen Golf
Volkswagen Golf • 2005-2024
VW integrates the IAT sensor into the MAF sensor (part number G70/G42). A standalone IAT sensor is not replaceable - the entire MAF unit must be replaced if the integrated IAT fails. However, most P0113 cases on the Golf are connector issues.
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 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.
Scan your car with Skanyx to diagnose P0113
Connect any Bluetooth OBD2 adapter, scan for codes, and get AI-powered diagnostics with severity ratings and repair cost estimates.
