P0113 Intake Air Temperature Sensor 1 Circuit High. An Expert’s Guide

A Quick Overview

Are you experiencing a P0113 error code related to the Intake Air Temperature (IAT) sensor in your vehicle? This code indicates that the IAT sensor 1 circuit is reading a high voltage, potentially leading to engine performance issues. In this expert’s guide, we’ll dive into the details of the P0113 error code, its causes, symptoms, and possible solutions. So, let’s get started!

Understanding the P0113 Error Code

The P0113 error code is specific to the Intake Air Temperature (IAT) sensor 1 circuit. It indicates that the voltage signal received from the IAT sensor is higher than the expected range set by the engine control module (ECM) or powertrain control module (PCM). This code is commonly encountered in vehicles equipped with a Mass Airflow (MAF) sensor system.

Causes of P0113 Error Code

Several factors can contribute to the occurrence of a P0113 error code, including:

• Faulty IAT sensor: A malfunctioning IAT sensor can provide incorrect voltage readings, leading to the high voltage signal.
• Wiring issues: Damaged or loose wiring connections between the IAT sensor and the ECM/PCM can result in high voltage readings.
• Intake air leaks: Any air leaks in the intake system can cause abnormal temperature readings and trigger the P0113 error code.
• Faulty ECM/PCM: In rare cases, a malfunctioning ECM/PCM can misinterpret the IAT sensor’s signals and generate the error code.

Symptoms of P0113 Error Code

When the P0113 error code is triggered, you may experience one or more of the following symptoms:

• Check Engine Light: The most apparent symptom is the illumination of the Check Engine Light on the vehicle’s dashboard.
• Reduced engine performance: High voltage readings from the IAT sensor can disrupt the air/fuel mixture, resulting in decreased engine performance and efficiency.
• Hard starting or stalling: In some instances, you may encounter difficulty starting the engine or experience intermittent stalling.

Diagnosing and Resolving P0113 Error Code

Here are the steps you can follow to diagnose and resolve the P0113 error code:

1. Scan for error codes: Use an OBD-II scanner or a compatible diagnostic tool to retrieve the error codes stored in the vehicle’s ECM/PCM. Verify that the P0113 code is present.

2. Inspect wiring connections: Visually inspect the wiring connections between the IAT sensor and the ECM/PCM. Look for any signs of damage, loose connections, or corrosion. Ensure that the wires are securely connected.

3. Check for air leaks: Examine the intake system for any air leaks, such as cracked hoses, loose clamps, or gasket failures. Address any detected leaks promptly.

4. Test the IAT sensor: Use a multimeter to measure the resistance and voltage output of the IAT sensor. Compare the readings with the manufacturer’s specifications. If the readings are outside the expected range, replace the sensor.

5. Clear error codes: Once the necessary repairs or replacements have been made, clear the error codes using the OBD-II scanner or diagnostic tool.

6. Test drive and recheck: Take the vehicle for a test drive to ensure that the P0113 error code does not reappear. Use the diagnostic tool to verify that no pending or stored codes are present.

Seeking Professional Assistance

If you are unsure about diagnosing or resolving the P0113 error code, it is advisable to seek professional assistance. Automotive technicians have the expertise and specialized equipment to accurately diagnose and repair complex issues within the vehicle’s electrical system.

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What is P0113 error code?

P0113 error code is a diagnostic trouble code (DTC) indicating a high voltage signal from the Intake Air Temperature (IAT) sensor 1 circuit. It occurs when the Engine Control Module (ECM) detects an unexpected voltage in the IAT circuit.

What are the symptoms of P0113 error code?

The symptoms of P0113 error code include poor engine performance, rough idle, reduced fuel economy, stalling or even no-start condition. In some cases, you may also experience the Check Engine Light turning on.

What causes P0113 error code?

The most common cause of P0113 error code is a faulty IAT sensor. Other possible causes include damaged wiring or connectors, a failed ECM or a malfunctioning throttle body. Additionally, extreme temperature swings can damage the IAT sensor.

How is P0113 error code diagnosed?

To diagnose P0113 error code, first, a scan tool is used to retrieve any DTCs stored in the ECM. Then, the IAT sensor and circuit are inspected for visible damage or corrosion. Finally, the resistance and voltage of the sensor are measured using a digital multimeter.

How is P0113 error code repaired?

Repairing P0113 error code involves replacing the faulty IAT sensor or repairing any damaged wiring or connectors. In some cases, the ECM may need to be replaced. After the repair, the DTC must be cleared using a scan tool.

Can I drive my vehicle with P0113 error code?

It is not recommended to drive your vehicle with P0113 error code as it can cause further damage to your engine. It is best to get the issue diagnosed and repaired as soon as possible.

How much does it cost to fix P0113 error code?

The cost of repairing P0113 error code varies depending on the make and model of your vehicle and the extent of the damage. On average, the cost can range from $100 to $500. However, replacing the ECM can be more expensive.