What does intake air temperature sensor 1 circuit high mean?

The "Intake Air Temperature Sensor 1 Circuit High" error code is a diagnostic trouble code (DTC) that indicates a problem with the intake air temperature (IAT) sensor circuit in a vehicle's engine control system. The IAT sensor measures the temperature of the air entering the engine's intake manifold and sends this information to the engine control module (ECM) to help calculate the correct air-fuel mixture.

Possible causes of the Intake Air Temperature Sensor 1 Circuit High error code include:

* A faulty or damaged IAT sensor
* A short circuit or open circuit in the wiring of the IAT sensor circuit
* A high resistance in the IAT sensor circuit
* A problem with the engine control module (ECM)

When the ECM detects a high voltage signal from the IAT sensor circuit, it sets the Intake Air Temperature Sensor 1 Circuit High error code. This can cause the vehicle's engine performance to suffer, as the ECM may not be able to accurately calculate the air-fuel mixture. Symptoms of this error code may include poor engine performance, decreased fuel efficiency, and difficulty starting the engine.

In some cases, the Intake Air Temperature Sensor 1 Circuit High error code may be triggered by a temporary issue, such as high ambient temperatures or a brief electrical surge. However, if the error code persists, it is essential to diagnose and repair the underlying problem to prevent potential damage to the engine. A mechanic can use a scan tool to monitor the IAT sensor circuit and perform tests to determine the cause of the error code.

How do I fix code P0113?

What causes high intake air temperature?

Can I drive with a bad air intake temperature sensor?

## Can I drive with a bad air intake temperature sensor?

Driving with a faulty air intake temperature (IAT) sensor is not recommended, as it can lead to decreased engine performance, reduced fuel efficiency, and potentially cause damage to your vehicle's engine over time. The air intake temperature sensor plays a crucial role in monitoring the temperature of the air entering the engine's intake system. This information is vital for the engine control unit (ECU) to calculate the correct air-fuel mixture, ensuring optimal engine performance and efficiency.

### Risks of Driving with a Bad IAT Sensor

Risks include:

• Poor Engine Performance: A faulty IAT sensor can cause the engine to run rich or lean, leading to poor engine performance, such as rough idling, stalling, or decreased acceleration.
• Reduced Fuel Efficiency: An incorrect air-fuel mixture can result in decreased fuel efficiency, as the engine may consume more fuel than necessary.
• Potential Engine Damage: Prolonged driving with a faulty IAT sensor can cause damage to the engine's components, such as the catalytic converter, due to an incorrect air-fuel mixture.

If you suspect that your air intake temperature sensor is faulty, it's essential to have it diagnosed and replaced if necessary. A faulty IAT sensor can trigger error codes, such as P0110, P0111, or P0113, which can be read using a code scanner.

In some cases, driving with a bad IAT sensor may not immediately cause noticeable problems, but it's crucial to address the issue as soon as possible to avoid potential long-term damage to your vehicle's engine. A faulty IAT sensor can also cause the engine to fail emissions tests, which may result in your vehicle being rejected from passing the test.

Signs of a faulty IAT sensor include:
* A decrease in fuel efficiency
* Engine performance issues
* Error codes related to the IAT sensor.