P0113 Fault Code

Intake Air Temperature Circuit High Input

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0113 fault code indicates a high input signal from the Intake Air Temperature (IAT) sensor. This sensor measures the temperature of the air entering the engine, helping the engine control unit (ECU) adjust fuel delivery and timing for optimal performance. When the sensor detects a voltage higher than expected, it triggers the P0113 code, which may lead to suboptimal engine performance and increased emissions.

What are the symptoms of the P0113 code?

Symptoms that may accompany the P0113 error code are:

• Illumination of the Check Engine Light (CEL)
• Poor fuel economy
• Rough idle or stalling issues
• Decreased engine performance or acceleration problems
• Increased emissions output during testing.

What causes the P0113 code?

Common causes for this fault code may include:

• A faulty IAT sensor
• Short circuit in the wiring harness
• Corrosion or damage in the sensor connector
• Faulty ECU interpreting the sensor signal incorrectly
• External factors such as extreme temperatures affecting the sensor's readings.

How to fix P0113?

To resolve the P0113 fault code, consider the following steps:

• Inspect the IAT sensor and its wiring for any visible damage or corrosion.
• Test the IAT sensor using a multimeter to ensure it operates within the specified voltage range.
• Repair or replace any damaged wiring or connectors.
• If the sensor is faulty, replace it with a new one and clear the error codes from the ECU.
• After repairs, reset the vehicle's computer and perform a test drive to ensure the issue is resolved.