August 21, 2018
Your car is reliant on hundreds of parts working in cooperation just so you can get to your destination. It’s something that most of us take for granted. Until we are faced with a malfunction.
Of course, there’s never a good time for a problem. But today’s cars are able to give us some insight into what may be wrong. Our cars now have computers that can communicate to some degree what the problem is. The computer does this by way of different error codes. By understanding what an error code is trying to tell us, we can more quickly have the problem diagnosed and repaired.
What Does Error Code P0113 Mean?
Your IAT sensor analyzes air temperature and density to make sure your engine starts correctly and maintains fuel economy regardless of the weather outside. When you see the error code P0113, it means the engine's computer is detecting above normal voltage to the IAT sensor.
So What Exactly Does That Mean to Me?
Your car has a PCM or Powertrain Control Module. This is your car’s “brain” and the computer system that runs it. This PCM constantly monitors the temperature of air entering the engine and does so by sending a voltage of about 5 to the IAT.
Since it is a thermistor, the IAT then resists that charge depending upon its temperature. The resulting voltage is sent back to the PCM. The PCM then uses that returning information to keep the air/fuel mixture, the Ignition Spark Timing, and EGR valve adjusted properly.
If the level of voltage is above 5 volts when returned to the PCM, it now detects that something is wrong and the P0113 Check Engine Light is illuminated.
What Can Cause The P0113 Error Code?
There are several things that can cause that error code. Some possibilities are:
Symptoms Associated with a P0113 Error Code
You may see one or several of the following symptoms accompanying the P0113 error code:
Diagnosing the Problem
It’s important to properly diagnose the issue when you are seeing the P0113 error code. Many people make some common mistakes during this process. Make sure to:
Use an OBD-II Scanner in order to assess the problem. If you notice that the error code persists, there are several other areas to check.
Air Temperature Reading
Allow your engine to run until it’s warm. Then use a scan gauge. This will compare your air temperature to the temperature of your coolant. An IAT that is working correctly should show a slightly lower temperature than your coolant temperature.
A P0113 error code can be caused by any corroded or loose wiring between the IAT and the PCM. Using a scanning tool, you will want to scan for an IAT reading. If the information comes back at -30°F, the connector should be unplugged.
You can then install a jumper wire between the ground circuits and the harness connector signal.
The IAT temperature reading should be maxed out at the high end at 280°F or higher. If so, the wiring is fine. The problem may have been the connection.
How to Fix the P0113 Code
If the problem is a faulty PCM, contact our PCM experts at Auto PCMS. AutoPCMS is dedicated to helping you get the longest life out of your car. That’s why we offer same-day shipping and we have a wide selection of replacement PCMs, ECMs and ECUs for Dodge, Cadillac, Chrysler, Jeep, Toyota, Honda, Lexus, Ford, Mitsubishi, Chevrolet, GM, and more! Call us today at 1-800-886-9926.
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