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P0113 – Meaning, Causes, Symptoms, & Fixes

P0113
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What Does Code P0113 Mean?

  • P0113 definition: Intake Air Temperature (IAT) Sensor Circuit High Input Problem
  • Issue Severity: MODERATE – Extended driving with this code may cause internal engine damage.
  • Repair Urgency: Get this code fixed as soon as possible to avoid emission system and catalytic converter damage.
  • Diagnosis: It is okay to drive a vehicle with P0113 for a short period of time, but driving with this code for an extended period of time can cause internal engine damage due to the engine running so lean. Which will result in more costly repairs in the future.

The IAT sensor uses the air density and air temperature in the car’s environment and analyzes it to determine the correct amount of spark and fuel injected. This helps the engine to start up on a cold day and also keeps consistent fuel economy during hot days. When the code P0113 is set, it means that your engine’s computer sees a signal above the normal 4.91 volts of reference voltage for .5 seconds or more to the IAT sensor.

P0113 Causes

There are many potential causes of code P0113.

  • Faulty or loose IAT sensor
  • Faulty or loose wiring connections

P0113 Symptoms

How Do I Fix Code P0113?

With an IAT sensor fault, the first step is to get it diagnosed to figure out what is causing the problem. 

If your vehicle has this fault and you’re not comfortable diagnosing this issue at home, we recommend finding a RepairPal certified shop nearby to pinpoint the problem and give an accurate estimate for repairs. 

These shops can not only help you figure out what’s going wrong before you waste time and money on the wrong parts, but they also offer a minimum 12-month, 12,000-mile warranty and stand behind all their estimates with guaranteed fair pricing.

> Find a RepairPal Certified Shop Near You

How Much Does It Cost to Fix Code P0113?

P0113 can be caused by anything from a bad sensor to faulty wiring. It’s impossible to give an accurate estimate without properly diagnosing the issue first. 

If you take your car to a shop for diagnosis, most shops will start with an hour of “diag time” (the time spent in labor diagnosing your specific issue). Depending on the shop’s labor rate, this typically costs somewhere between $75-$150. Many, if not most, shops will apply this diagnosis fee to any required repairs if you have them perform the repairs for you. From there, a shop will be able to give you an accurate estimate for repairs to fix your P0113 code.

Possible Repair Costs for P0113

For error code P0113, one or more of the below repairs may be needed to solve the underlying issue. For each possible repair, the estimated cost of repair includes the cost of the relevant parts and the cost of labor required to make the repair.

  • IAT sensor: $87 to $96
  • Electrical system diagnosis: $88 to $111

DIY Steps to Diagnose Code P0113

Engine code P0113 could be caused by a number of things, including a bad sensor or faulty wiring. If you’d like to try to fix code P0113 at home without throwing money at parts, you’ll want to follow the steps below for proper diagnosis. Keep in mind this is an intermediate-level diagnosis and repair and not recommended for beginners. Diagnosis requires more specialized equipment beyond what the FIXD Sensor can provide and it can be a time and labor-intensive process for inexperienced DIYers.

DIY difficulty level: Intermediate

This repair requires mechanical knowledge and is not recommended for beginners.

Tools/parts needed (our top picks from Amazon):

STEP 1: USE FIXD TO VERIFY IAT DATA.

Using FIXD Live Data, look at your intake air temperature data. This provides a live readout from the IAT sensor. Start and run your car for five to ten minutes before measuring this to let the engine warm up. The intake air temperature should read a little lower than the coolant temperature if working properly. 

STEP 2: CHECK IAT SENSOR WIRING.

Visually examine the wiring to the IAT sensor to look for loose or corroded wires or connectors.

STEP 3: CHECK IAT SENSOR RESISTANCE.

Remove the IAT from the vehicle (refer to your service manual for the location of your IAT). Using a multimeter, check the resistance of your IAT. Then apply heat to the IAT sensor tip. Resistance should decrease. If there is no change or an infinite resistance reading, this means your IAT is faulty and should be replaced.

If these steps do not clear your Check Engine Light, you may need to visit a mechanic because there may be internal issues with the PCM, ECM, etc.

Common P0113 diagnosis mistakes

Replacing the IAT sensor without checking for loose/corroded wiring around the sensor.

Still Need Help Fixing Code P0113?

If you’ve followed the steps above and are still experiencing check engine code P0113, please contact the FIXD Mechanic Hotline if you’re a FIXD Premium subscriber or find a RepairPal certified shop near you to get the right repairs at a fair price.

Justin-Hughes

Recovering autocross and track day enthusiast. Once turned a VW Jetta into a pickup truck. Lives in a van down by the river. Dream car: 2001 Subaru WRC rally car.

We’re here to help you simplify car care and save, so this post may contain affiliate links to help you do just that. If you click on a link and take action, we may earn a commission. However, the analysis and opinions expressed are our own.

About the Author

Justin Hughes

Justin Hughes

Recovering autocross and track day enthusiast. Once turned a VW Jetta into a pickup truck. Lives in a van down by the river. Dream car: 2001 Subaru WRC rally car.

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