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P0113 OBD-II Intake Air Temperature Sensor 1 Circuit High Trouble Code




The P0113 code is an OBD-II trouble code that stands for “Intake Air Temperature (IAT) Sensor Circuit High Input.” If your OBD-II scanner displays this code, the computer in your vehicle has identified a problem with the IAT sensor 1 or its circuit.

In this article, I will be talking about the P0113 trouble code, its symptoms, causes, and how to fix it.

What Does The P0113 Code Mean?

P0113 OBD-II Intake Air Temperature Sensor 1 Circuit High Trouble Code

The P0113 trouble code means that the signal from IAT sensor 1 is very high. These readings are relayed to the Powertrain Control Module (PCM) to change the fuel-to-air ratio as necessary. Yet, when the voltage becomes very high, a trouble code is generated to indicate a problem.

To monitor the air intake temperature, the PCM delivers a five-volt current to the IAT sensor. If the temperature rises significantly, the thermistor’s resistance decreases, whereas lower temperatures result in more resistance.

This resistance value determines the voltage observed by the powertrain control module (PCM). If the feedback voltage exceeds five volts, this error code will appear on your scanner.

(Related: P0507 OBD-II Idle Air Control System RPM Higher Than Expected Trouble Code)

Which Models Are Affected By The P0113 Code

MakeAffected By P0113 Code

What Are The Possible Causes of the P0113 Code?

The P0013 trouble code is caused when the vehicle’s computer detects a high signal coming from the intake air temperature sensor (1).

The P0113 trouble code does not necessarily indicate that the air intake is overheated. This code may be activated for a variety of reasons, including:

  • Faulty intake air temperature (IAT) sensor: Your IAT sensor may require cleaning, adjustment, or replacement. A malfunctioning IAT sensor is the most frequent cause of a P0113 code.
  • Dirty air filter: The second most prevalent reason for the P0113 trouble code is a dirty air filter. If your air filter is sufficiently soiled to impede airflow, your air intake system must work harder or receive insufficient airflow. Both scenarios will increase the air intake temperature.
  • Defective MAF sensor: If your MAF sensor malfunctions, your vehicle may try to take in more air than it requires, resulting in an overheated air intake system.
  • Wiring issues: Many wiring issues, such as corroded terminals, damaged wires, and short circuits, might result in a P0113 code.
  • A faulty powertrain control module (PCM): A faulty PCM is the least common cause of the P0113 trouble code and the most expensive to fix.

What Are The Common Symptoms of The P0113 Code?

It is simple to recognize the symptoms of a P0113 code. Among the most frequent symptoms of the P0113 trouble code are the following:

Is It Safe To Drive With a P0113 Code?

Yes, it is safe to drive your car with a P0113 trouble code, but only for a short period. Driving with this code for a longer period might cause internal engine damage.

The P0113 trouble code is regarded as a typical error. There is no immediate danger to you or your car from the two most prevalent reasons of this code, which are inexpensive to correct. Yet, if the problem is not addressed on time, it might become more serious.

If the air intake temperature is very high or if your MAF sensor or PCM is defective, the air-to-fuel ratio in your car will be altered, which can cause damage to other engine components.

So, although the P0113 trouble code is not serious enough to necessitate immediate attention, prompt attention is essential.

How To Diagnose The P0113 Code

Here is how to diagnose the P0113 trouble code:

  1. Check to verify if there are any technical service bulletins available for the make and model of your vehicle to determine if there is a known issue for your vehicle that can help remedy the issue.
  2. Use an OBD-II scanner to scan your system for more trouble codes, document the codes received, and examine the freeze frame data to determine the triggering conditions.
  3. Clear the vehicle’s fault codes and then retest the car to determine if the code will be returned.
  4. A visual examination of the wiring between the IAT and PCM, including inspection of the sensor connector and shorting harness.
  5. Check the air temperature when the engine has reached operating temperature.
  6. Determine whether the IAT sensor is faulty by measuring its resistance.
  7. Do the manufacturer-specific pinpoint checks for the P0113 code if no problems have been detected.

Most Common Mistakes When Diagnosing The P0113 Code

With the P0013 trouble code indicating to the IAT sensor 1, you might replace and then proceed. Nevertheless, this does not always turn off the Check Engine Light, thus a diagnosis must be done first.

In certain instances, the wiring is only loose or rusted. If this is the issue with your car, the solution is typically less expensive than replacing the sensor, therefore you should begin here.

How Much Does It Cost To Repair P0113 Code?

One or more of the following fixes may be required to resolve the underlying cause of the P0113 trouble code. For each potential repair, the estimated cost of repair includes both the cost of the necessary parts and the cost of labor.

Here are some of the most typical repairs, along with the anticipated labor and material costs.

  • IAT sensor 1 replacement: $75-$175
  • Repairing connection or damaged wiring: $50-$250
  • Mass air flow sensor replacement: $75-$325
  • Updating/replacement of the PCM: $250-$2500
MakeP0113 CodeRepair Cost
ToyotaYes$50 – $2500
NissanYes$50 – $2500
ChevroletYes$50 – $2500
BMWYes$50 – $2500
AudiYes$50 – $2500
BuickYes$50 – $2500
MercedesYes$50 – $2500
GMCYes$50 – $2500
SuzukiYes$50 – $2500
TataYes$50 – $2500
LexusYes$50 – $2500
MazdaYes$50 – $2500
MitsubishiYes$50 – $2500
KiaYes$50 – $2500
JeepYes$50 – $2500
FiatYes$50 – $2500
HondaYes$50 – $2500
HyundaiYes$50 – $2500
OpelYes$50 – $2500
FordYes$50 – $2500
FiatYes$50 – $2500
PeugeotYes$50 – $2500

What Repairs Can Fix The P0113 Code?

Repairs that can fix the P0113 trouble code are:

  • Replace the faulty intake air temperature (IAT) sensor 1.
  • Repair or replace the defective MAF sensor.
  • Repair or replace the IAT connector short.
  • Replace or repair the wiring as necessary.

How To Fix The P0113 Code

Here is how to fix the P0113 trouble code:

  • Check the code using an OBD-II scanner, then clear the trouble code. Follow this with a test drive to determine if the error code has been cleared. Upon its return:
  • Examine the IAT sensor; it can require cleaning, adjustment, or replacement.
  • Inspect the air filter to ensure enough airflow.
  • Check if the MAF Sensor is malfunctioning with an erroneous or nonexistent output, and if so, replace it.
  • Examine the wiring and connectors for corrosion, short circuits, damaged wires, and so forth.
  • The final step is to inspect the PCM, but this is the least likely reason for the P0113 trouble code.

In Conclusion

Every P0110 code requires quick repair. If ignored for too long, it can cause engine damage that may or may not be permanent.

If permanent damage does occur, the total cost to repair the engine will be greater than if you had not paid closer attention to the P0113 code.

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Vide Polowenski, Senior Mechanic

The information in this article is current and up-to-date in accordance with the latest mechanic SOPs.

Please take the time to leave a comment if this article has helped you in any way, you need additional help, or you have a suggestion.

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