Error Code P02EB: What It Means & What To Do?

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OBD Error Code P02EB is a generic trouble code and mostly applies to all the OBD-II vehicles. It might be more prominent in Chevy, Dodge and GMC vehicles. Though this code is generic but the steps to fix and diagnose it may vary from vehicle to vehicle depending upon the manufacturer and powertrain configurations.

The DIAFCS system also known as the Diesel Intake Air Flow Control System is bolted to your vehicle’s intake manifold in the intake air stream. This system is responsible to control the amount of incoming airflow. This OBD error code P02EB will be set by your vehicle when this diesel intake air flow control motor is detected with some current range or performance problems. It can either be set because of a mechanical problem or because of some electrical issues. This problem might take a serious toll on your car, so we recommend you to get away with it at the earliest.

What causes this problem with the Diesel Intake Air Flow Control Motor?

• Possible open in the signal circuit to the DIAFCS motor
• Voltage problems in the signal circuit to the DIAFCS motor/control
• Possible short to ground in the signal circuit to the DIAFCS motor/control
• Problems with the DIAFCS motor/control
• Faulty Powertrain Control Module

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If you are looking for few common symptoms of the OBD error code P02EB, then you have arrived at the right place. We at PartsAvatar are here to help you diagnose your vehicle’s problem efficiently and avoid any misdiagnosis. Let us start with the common symptoms of the OBD error code P02EB.

Common Symptoms

• Illumination of the Malfunction Indicator Light
• Low Idling speed
• Illumination of Electronic Throttle Control symbol
• Gradual Power Loss
• No Burning of Soot out of the DPF Catalyst
• Increased Fuel Consumption

If you really wish to correct this error code with your vehicle, then you will have to follow certain steps. Are you wondering what might be those steps? If Yes, then don’t worry! We are here to guide you.

To correct this issue, you might need to undergo few replacements for the defective parts such as:

• Diesel intake air flow control motor
• Powertrain Control Module
• Throttle Body Assembly

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Now, in order to correct the problem it is extremely essential to diagnose it efficiently and appropriately. While doing so you might commit few mistakes, to prevent you from doing so we have listed out few steps for you to keep in mind.

• Firstly, you will need to locate and visually inspect your vehicle’s DIAFCS motor control system. Also, check the connectors and wirings to it. Make sure there are no scraps, bare wires, burnt spot or melted plastic.
• Next, take out the connectors and check carefully for any burns or green tints that indicate corrosion. Clean the terminals if needed.
• Next, use a scan tool to check if the OBD error code P02EB returns. In case it does you will need to inspect the DIAFSC and all the related circuits for any damage.
• Now, take the key off and disconnect the electrical connectors at the DIAFCS motor/control. Now connect a digital voltmeter black lead to the ground terminal at the DIAFCS motor/control wiring harness connector.
• Now turn the key on and engine off and check for the manufacturer’s specifications. Make sure that the voltmeter reads 12 volts. In case it does not, you will have to repair the power or ground wire. You can also replace the PCM if needed. While installing the PCM make sure it is programmed and calibrated to the vehicle correctly.
• Now, in case all tests pass and you still face the same code, then you will need to check the manufacturer specifications.

Common Mistakes While Diagnosing The P02EB Code

You might undergo the following failures:

• PCM failure
• Throttle body assembly failure
• Wiring issue