P02E0 OBD Error Code: Problem & Solutions

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The OBD code decreased engine performance can be defined as a diesel intake air flow control circuit/open. The volume of air which is going through the intake is controlled by the intake airflow control valve on the throttle body. If an implausible signal is detected by the engine control module from the intake airflow control valve, the powertrain control module would trigger the P02E0 fault code. If there is a failure of the intake airflow control valve, then there would be a need to replace the throttle body assembly.

The diesel intake air flow control system is generally bolted to the intake manifold in the intake air stream. The amount of incoming airflow would be controlled by the DIAFCS system by varying a signal to a motor which is operated by the powertrain control module. The throttle plate which is opened or closed by the motor regulates the airflow.

What causes this problem with the Diesel Intake Air Flow Control Circuit/Open?

• Faults in the mass air flow sensor
• Dirty mass air filter
• Mass air flow sensor harness might be opened or shorted
• The electrical terminals might be loose or corroded in the mass air flow sensor circuit
• Leakage in the air intake system
• The mass air flow sensor might be dirty
• The mass air flow sensor can be unplugged or the wiring might be damaged

1. Mass Air Flow Sensor - Did your mechanic just found out that there is some fault in the Mass Air Flow Sensor? Buy top notch Mass Air Flow Sensor from us at economical prices.
2. Mass Air Filter - A defective Mass Air Filter can cause a lot of issues. It would be nice if you get it replaced on time.
3. Engine Control Module - Everything is fine with the Mass Air Flow Sensor and still OBD code P02E0 flashing? Then there is definitely some fault with the Engine Control Module. Get it checked and replace if needed.
4. Powertrain Control Module - Powertrain Control Module is an important car part which should never be neglected. May be there is some fault in it due to which P02E0 code may start flashing.
5. Air Intake System - A faulty Air Intake System can be troublesome. You can always rely on us as we have best auto parts for our customers.

Our main motive is to achieve customer satisfaction as for us our customers are everything and that’s why we will help you to diagnose P02E0 code by mentioning some major symptoms below:

Common Symptoms

• There can be a malfunction in the indicator light on
• Loss of power
• No Regeneration of the diesel particulate filter to burn off the soot build up
• Electronic throttle control symbol might start flashing
• Possible low idle speed only

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P02E0:

• The defective mass air flow sensor should be replaced
• Make sure that you replace the engine control module
• If you find out that there are some defaults in the air intake system, then you must replace it

However, if you face any issue then we have stocked a wide range of best priced k&n cold air intake, fuel pressure regulator, mass air flow sensor cleaner and more to help you out in fixing your car.

Here are some steps which you should follow in order to diagnose this fault code:

It would be a great idea to check for technical service bulletins for your vehicle. Your issue may be a known issue with a known fix put out by the manufacturer and can save a lot of time as well as money during the process of diagnosis.

After that you must locate the DIAFCS motor/control system on your vehicle. The motor/control is generally bolted to the intake manifold in the intake air stream. Once it is located, the connector and wiring should be visually inspected. You must look for the scraping, rubbing, bare wires, burn spots or melted plastic.

The connector should be pulled apart and the terminals should be carefully checked which are located inside the connector. Inspect they look burned or have a green tint indicating corrosion. You must use electrical contact cleaner and a plastic bristle brush if there is a requirement of cleaning of the terminals. Let dry and electrical grease should be applied where the terminals contact.

If a mechanical code was triggered, then you must use an intake cleaner and a clean rag to wipe out the carbon deposits behind the throttle plate of the motor control system. Spray the cleaner onto the rag and wipe out the deposits with the rag.

Make sure that you never spray these deposits into the engine, as they can cause bad running, misfires and with enough intake cleaner, catalytic converter damage and possibly engine damage.

If you have a scan tool, then the diagnostic trouble codes from memory should be cleared, and see if P02E0 code returns. If it does not, then the connections were most likely your problem. If you find out that the P02E0 code is not returning, then you must test the DIAFCS and its associated circuits. With the Key Off, the electrical connector should be disconnected at the DIAFCS motor/control.

Connect a digital voltmeter black lead to the ground terminal at the DIAFCS motor/control wiring harness connector. Connect the red lead of the digital voltmeter to the motor terminal at the DIAFCS sensor wiring harness connector. Turn key on engine off. Check the manufacturer’s specifications; voltmeter should read 12 volts. If not, then you must repair the power or ground wire, or the powertrain control module should be replaced. Check manufacturer’s specifications for complete test procedures on your specific vehicle if unsure.

If the prior test passed and you continue to get a P02E0, this would most likely indicate a failed DIAFCS motor/control, although a failed PCM could not be ruled out until the DIAFCS motor/control had been replaced. If unsure, seek assistance from a trained automotive diagnostician. PCMs must be programmed or should be calibrated to the vehicle for proper installation.

Common Mistakes When Diagnosing The P02E0 Code

• Wiring issue
• Flaws in the throttle body assembly
• Powertrain Control Module might start failing