P0113 Code: Everything You Need To Know

There are many moving parts in ensuring you have a functional motor vehicle that safely gets you from point A to point B.

The car’s system has numerous intertwined parts that regulate everything and let the driver know when something is causing issues.

This is a comprehensive guide to defining, diagnosing, troubleshooting and common repairs associated with fixing the P0113 Code complications you’re experiencing.

What even is a P0113 Code?

The definition of a P0113 Trouble Code is Intake Air Temperature (IAT) Sensor Circuit High Input.

How Does a P0113 Error Code Apply To Me?

Your vehicle’s PCM (Powertrain Control Module) is an automotive computer that is essentially the brains of the car.

The PCM monitors the temperature of all the air entering the engine by sending a voltage of about 5 volts to the IAT.

When this happens, the IAT resists the charge and the resistance level directly correlates to the current temperature.

When the temperature rises, the resistance lowers. So pretty much a lower temperature translates to a higher signal voltage.

The PCM needs this data in order to regulate the “Air Fuel Ratio, the Ignition Spark Timing and many components of the Emission Control Systems” as stated by RepairPal.

When the IAT returns the voltage to the PCM and the voltage level is above 5 volts the PCM is now aware that there is something wrong and proceeds to alert the driver by illuminating the P0113 Check Engine Light.

Common Causes That Lead To The P0113 Error code

  • – A faulty or damaged Intake Air Temperature Sensor
  • – A faulty Powertrain Control Module
  • – Faulty Electrical Wiring  
  • – Dirty air filter
  • – Defective Mass Air Flow Sensor

Common Symptoms Associated With P0113 Error Code

  • – Check Engine Light will appear
  • – Subpar Engine Performance
  • – Poor Fuel Economy
  • – You notice an increase of emissions
  • – Poor Acceleration

Common Mistakes Made When Diagnosing The Issue

  • – Haphazardly following the test procedure by skipping steps and not following instructions
  • – Not thoroughly examining connections and wiring prior to determining the cause of the issue
  • – Replacing the IAT sensor when the actual issue is something else such as a dirty air filter or faulty wiring.

What Does Diagnosing The P0113 Code Entail?

If you notice that the check engine light has appeared you should use an OBD-II Scanner to further assess the issue.

Once you notice that the error P0113 code is returned there are several areas to examine.

Check The Air Temperature Reading

First you need to let your car heat up so let it run for awhile until it’s warm. Measure the air temperature and measure the coolant temperature with a gauge and compare.

The IAT should report a lower temperature than the coolant temperature if the IAT is functional and working properly.

Examine The Wiring

You definitely need to assess the current state of the wiring and look for any damaged, loose or corroded wires.

You will also need a scanning tool for this as well. Scan to get the IAT reading. If the data comes back -30 degrees next you should unplug the connector.

Install a jumper wire between the ground circuits and the harness connector signal.

“The IAT temperature reading on the scan tool should be maxed out at the high end. For example it should be 280 degrees Fahrenheit or higher. If it is, the wiring is okay, and it may have been the connection.” stated by OBD-Codes.

Possible Solutions For Fixing The P0113 Code

  • – Replacing the IAT Connector if needed
  • – Replacing the wiring if needed
  • – Replacing the faulty PCM if needed

How We Can Help

If you find out that that you do in fact need a PCM Replacement please don’t hesitate to contact SoloPCMs for timely and unparalleled service.


in Automotive Advice.

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