Guide To P009A OBD Error Code Solutions

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If OBD Error Code P009A is flashing on your vehicle, then the chances are that your mechanic left the IAT sensor unplugged after service or you have a faulty IAT (Intake Air Temperature) sensor. But now the thing that troubles us is what is this obd P009A error and how it affects your vehicle’s health? Let’s have a better and deeper look at this problem in the sections that follows.

This error code is a generic powertrain diagnostic trouble code (DTC) that applies to many OBD-II vehicles such as Mercedes-Benzes, Jeep, Mazda, Ford and many more.

Now, let's try and understand what is this P009A error code in a simple layman language. The intake air temperature of your vehicle performs the function of measuring the air temperature that goes into your vehicle’s engine. The engine control module will make use of this information to decide how much fuel it should use to keep the engine running properly. Now when ECM/PCM detects that there is a problem in or with this sensor or the related circuit, it will simply set P009A OBD error code.

What causes this problem with the Intake Air Temperature Sensor Or Circuit?

• Got your car recently serviced? Well, the chances are that your car mechanic left the IAT sensor unplugged
• Ambient Air Temperature Sensor, if in bad condition can lead to this problem
• IAT sensor, if faulty can award you with the error code P009A
• Short or open circuits or connectors can become a potential cause too
• Last but not the least, errors with PCM (powertrain control module) and its programming can become another possible cause behind P009A error code

1. IAT (Air Intake Temperature) Sensor - Need IAT sensors? Well, now is the time you get one for yourself with us at PartsAvatar and get your IAT Sensors at best prices online.
2. Ambient Air Temperature Sensor - If you are looking for ambient air temperature sensors online, then you can simply visit our website and get your parts for all makes and models.
3. Powertrain control module - P009A code might not end with just damaging your IAT Sensor it might also damage the PCM of your vehicle. You can find powertrain control module with us.
4. ECM - if you need engine control module to correct your obd error code P009A then you can simply browse through our PartsAvatar Canada website and get your hands on the best selection parts available.
5. Diagnostic Tools - Well, in order to detect and diagnose all the obd error code, you will need these diagnostic tools.

Well, if you are looking to know about the common symptoms related to this error code P009A, we are sad to inform you that there are not many. Still, we have worked out a small list to help you discover this error code with your vehicle.

Common Symptoms

• Your vehicle’s engine might start giving you some drivability issues
• There are chances that you experience sudden reduction in your vehicle’s fuel efficiency
• Your vehicle might suddenly consume a lot more fuel than usual.
• We’ll all this symptom is not enough to determine whether you are having P009A error code or not. You might need to undergo a complete diagnosis of your car to check for it. 

In order to correct this OBD Code P009A you will need to undergo the following steps and might need the following parts.

• You will need to repair the broken or shorted circuits/connectors and wirings
• Try cleaning the corrosion from the connector and/or the circuits
• Replacing the ambient air temperature sensor and/or IAT sensor will help you get rid of this issue

If you continue to face these problems and need parts to fix it you can find them with us. We have stocked a wide range of best priced ECM, PCM, IAT sensors and a lot more to help you out in fixing your car.

If you want to diagnose your vehicle to ascertain if you are facing OBD error code P009A or not, you will require few diagnostic tools such as

• Infrared Thermometer
• Laser Pointer
• Diagnostic Scanner
• Digital Volt/ohm meter (DVOM)

At first you will need to diagnose the air filter element. Make sure that its clean and inserted into the housing. In case you find that your air filter element is in perfect condition, then you will need to check the IAT sensor and Ambient Air Temperature sensor wiring and connectors.

After this you will need to connect the diagnostic scanner to the vehicle diagnostic port. Retrieve all the stored code and note down the information for use as the process unfolds. Clear all the codes, test-drive the vehicle and check if the P009A code flashes again or is reset.

One thing that you should keep in mind is to unplug the PCM and all the related controllers to prevent any damage to them.

Common Mistakes When Diagnosing The P009A Code

Common mistakes that you can commit while conducting the diagnose is damaging the pcm or other related controller by not unplugging them before undergoing the diagnosis and connecting the DVOM.