P0113 Code (Meaning, Causes, Symptoms & Fixes)

If your vehicle’s dashboard displays a check engine light, your vehicle has a lower fuel efficiency or has trouble accelerating, and you might be experiencing a P0113 trouble code.

The simplest way to confirm this is through connecting an OBD II scanner to your vehicle, which you can easily do at home, and then you will be able to access the P0113 trouble code.

This article will discuss everything you need to know about the P0113 code, its symptoms in detail, and how you can fix this trouble code.

A functioning IAT sensor releases its analysis directly to the PCM. The computer can modify the fuel injectors and other parts that regulate the internal combustion chamber with this information. The precise readings aid the engine in consuming fuel effectively.

Suppose the PCM detects the signal voltage is reading to be higher than the limit. In that case, it perceives that the IAT sensor circuit is not functioning properly.

This could be because the sensor is not connected or the terminals have been damaged, a sensor’s wire was cut, or because of an open malfunctioning circuit.

The computer knows that -40 is not the correct reading, so it changes to the Check Engine Light and registers the error code P0113.

Common Causes of the P0113 Code

Causes of P0113 Code

Here are some factors that could cause your IAT sensor to produce an extremely high voltage:

  1. A dirty air filter: This will result in engine overheating but is fairly simple to fix.
  2. A damaged or malfunctioning IAT sensor: This is a frequent cause of code P0113.
  3. Wiring that is damaged. The short circuit or the stripped wires could cause all kinds of problems in your electrical systems and could be the main reason for a damaged sensor.
  4. A defective Mass airflow sensor: This is not so frequent, but it could cause your car to draw in too much air, which could be the reason for an air intake resulting in overheating.
  5. A broken PCM. The most costly option, however, PCM that is defective will be affecting more than just recognizing the misinterpretation of the temperature of the air.

Also Read: P0456 Code – Meaning, Causes, Symptoms & Fixes

Symptoms of P0113 Code

Here are some of the symptoms of the P0113 error code.

  1. The “check engine” light comes on: This means that the PCM is displaying an error.
  2. Subpar engine capability: This specifies a dirty filter or a damaged mass airflow sensor.
  3. Poor fuel efficiency: Overheated air intake can result in your gas mileage decreasing. Of course, your vehicle will be able to adjust to the sensor’s incorrect readings, which means that your gas mileage could also be reduced due to a defective sensor.
  4. Rise in emissions: This is due to having the wrong air to fuel ratio.
  5. Poor acceleration: This is also due to an insufficient fuel to air ratio.

How to Diagnose the P0113 Code?

How to Diagnose the P0113 Code

To diagnose the P0113 code, scan the ECM, document the codes it received, and then examine the freeze frame information to determine the conditions when the code was set.

  1. Clear the vehicle of all fault codes, and then tests run the vehicle again to see whether the error code is shown again.
  2. Conducts a visual inspection to look for a shorting harness or connector to the sensor
  3. The sensor’s live data is observed on the scanner while disengaging the IAT sensor connector. IAT sensor connector to determine whether the sensor’s reading goes to -40degF, which means the sensor is being shorted.
  4. If the sensor is not connected and the input temperature remains at 240degF, the short could be inside the harness or connector.

If there are no issues, conduct the manufacturer’s precise testing for the code and then carry out repairs as required.

Also Read: P0430 – Meaning, Causes, Symptoms & Fixes

Common Mistakes When Diagnosing P0113 Code

  1. Not completely examining the connections and wiring.
  2. Changing the IAT sensor without inspecting the wiring or the air filter to determine the cause.

How to Fix the P0113 Code?

Since OBD-II codes can have a variety of causes, there’s not a single solution to fix a particular code.

Each possible cause has specific solutions and fixes; that’s why it’s crucial to identify OBD-II codes properly and figure out the cause prior to trying any repairs.

However, only drivers with the right technical expertise can attempt DIY repairs on the engine with P0113 codes.

If not, take the automobile to the closest repair shop for auto repairs and have a certified expert repair the damaged IAT sensor.

If you choose to take on the P0113 fix on your own, consider that different kind of vehicles will require different solutions.

So always read the owner’s manual and then consult the factory repair guidelines to determine the best solution for your vehicle.

It’s important to note that not all P0113 trouble code needs replacing the IAT sensor. The issue could be in different parts of the IAT circuit, for instance, the connection.

In the event that the IAT sensor becomes defective and a replacement is required, it will cost between $90 and $110.

Check out this video for more tips on fixing the P0113 code

Frequently Asked Questions About P0113 code

How Do I Fix Code P0113?

Since a P0113 code is usually caused by a malfunctioning circuit or damaged IAT sensor, the most frequent fix is to replace the damaged part. You could also try cleaning the IAT sensor’s tip before changing the grounds.

Can I Drive With P0113?

It is acceptable to drive using P0113 for just a short period of time; however, using your automobile with this code over a prolonged duration of time may cause damage to the internal engine because the engine is running on lean conditions.

Can P0113 Cause Misfire?

Receiving codes P0304 or P0113, no – IAC (Intake Air Temperature) sensor/circuit defect does not alter a 1-cylinder’s misfire. The IAT sensor wire connector is mostly detached when various engine functions are in progress and connected again.

What Will a Bad Air Temp Sensor Do?

One of the first signs that a car will show the moment an air charge temperature sensor is failing is a significant decrease in power during acceleration. A failing or damaged sensor won’t send the right signals to computers and could negatively affect the computer’s fuel and air mixture calculations.

Is P0113 an Issue?

The P0113 code can cause an engine ECM to enter the failsafe mode. Operating the vehicle for a long period of time while running lean conditions could cause internal engine damage to the valves and rings.

What Happens if You Unplug IAT Sensor?

If you remove the IAT Sensor, the car will kick off. If you attempt to plug it while the vehicle is running, it will cease to function.

What Are the Symptoms of a Bad Iat Sensor?

Rough idling and rough running: Obstruction of Engine, rough Idling, engine stumbling, and sudden surges in power are typically related to IAT sensor malfunction. These are serious symptoms and can get worse over time.


There are additional diagnostic trouble codes that cover the IAT sensors and the associated circuitry.

For instance, the irregular IAT sensor signal is classified under the P0114 code; a sensor creates an input with a low voltage warrant the trouble code P0112.

P0098 is closely identical to the P0113 because it has the same problem of low temperature, greater resistance to electrical current, and high signal voltage in sensor 2. This is the 2nd IAT sensor inside the engine.

The majority of temperature sensors for intake issues for P0113 code result from malfunctions due to damaged shorted harnesses or from sensors being connected internally to power.

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