How much does it cost to fix P0113?

DIY repair typically costs $25–$120 for parts. Professional repair runs $100–$350 including parts and labor.

P0113

Powertrain

Moderate

Intake Air Temperature Sensor 1 Circuit High

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The P0113 trouble code indicates that your vehicle's Engine Control Module (ECM) has detected an unusually high voltage reading from the Intake Air Temperature (IAT) sensor circuit. The IAT sensor measures the temperature of air entering the engine and sends this information to the ECM, which uses it to calculate the optimal air-fuel mixture for efficient combustion. When the sensor reports a voltage higher than the expected range—typically indicating extremely cold air temperatures below -30°F to -40°F when actual temperatures are much warmer—the ECM triggers this diagnostic code and illuminates the Check Engine Light.

This code matters because accurate intake air temperature data is critical for proper engine performance, fuel efficiency, and emissions control. When the ECM receives incorrect temperature readings, it may compensate by adjusting the fuel mixture inappropriately, leading to poor fuel economy, rough running, and increased emissions. A P0113 code typically indicates either a failed IAT sensor, damaged wiring, or corroded electrical connections in the sensor circuit. In some vehicles, the IAT sensor is integrated into the Mass Air Flow (MAF) sensor assembly, while in others it's a standalone component located in the air intake duct.

If you're experiencing a P0113 code, you should have it diagnosed and repaired within a week to prevent potential drivability issues and avoid long-term damage to your catalytic converter from improper fuel mixtures. The repair is generally straightforward and DIY-friendly for those with basic mechanical skills. Most cases involve simply replacing the IAT sensor itself, which costs between $25-$120 for parts if you do it yourself, or $100-$350 including labor at a professional shop. Before replacing parts, inspect the wiring and connectors for obvious damage, corrosion, or loose connections, as these simpler issues account for about one-quarter of P0113 cases.

Severity

Moderate — Address SoonThis Week

Symptoms

•Check Engine Light illuminated
•Rough or unstable idle
•Hard starting, especially in cold weather
•Poor fuel economy and reduced gas mileage
•Engine hesitation or stumbling during acceleration
•Black smoke from exhaust due to rich fuel mixture

Likely Causes

Faulty Intake Air Temperature (IAT) sensor45%

The IAT sensor itself has failed internally, causing it to send incorrect high voltage signals to the ECU. This is the most common cause of P0113 codes.

Damaged or corroded wiring and connectors25%

Broken wires, corroded terminals, or poor electrical connections in the IAT sensor circuit can create high resistance or open circuits that trigger this code.

Short circuit in IAT sensor wiring15%

The sensor wiring may be shorted to voltage (battery positive), causing the ECU to read abnormally high voltage levels from the sensor circuit.

Failed Engine Control Module (ECM/PCM)10%

In rare cases, the engine computer itself may have internal faults that cause it to misread or misinterpret IAT sensor signals, though this is uncommon.

Dirty or contaminated MAF sensor affecting IAT readings5%

When the IAT sensor is integrated into the Mass Air Flow sensor assembly, contamination on the MAF can affect IAT readings and trigger this code.