P02E2 - OBD Trouble Code

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The OBD code P02E2 can be defined as diesel intake air flow control circuit low. The powertrain control module would monitor the volume air flow to the engine intake controlled by the intake air flow control valve on the throttle body. The powertrain control module would set this fault code when the intake airflow control valve would be out of factory specifications.

This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

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.

The fault code P02E2 diesel intake air flow control circuit low is set when there is a detected low electrical condition in the diesel intake air flow control system. It would be set when the voltage at the motor control would stay below a set level for a longer period of time. This trouble code is generally considered to be an electrical circuit problem.

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

• There can be a short to ground in the signal circuit to the DIAFCS motor/control
• The DIAFCS motor/control might be failed
• The powertrain control module might have some defaults

1. Air Intake System - There can be some issues with the Air Intake System due to which you may see P02E2 code appearing over and over again. Visit us to buy best quality Air Intake System online.
2. Engine Control Module - A lot of issues can arise do to defective Engine Control Module. Did you just see P02E2 code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Throttle Body Assembly - Faulty Throttle Body Assembly can be the reason why P02E2 code is flashing. Visit us to purchase Throttle Body Assembly online.
4. Powertrain Control Module - It is an important auto part which needs full care. A faulty Powertrain Control Module can be a reason behind the flashing up of P02E2 code.

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• There might be no regeneration of the diesel particulate filter to burn off the soot build up
• Problem of loss of power
• The indicator light on may start malfunctioning
• Low idle speed
• Electronic throttle control symbol might start flashing

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• The defective air intake system should be replaced
• If there are some issues in the engine control module, then it should be replaced
• The malfunctioning throttle body should always be replaced
• The powertrain control module should be repaired or replaced
• There is no need to get strained if your OBD Code is still flashing up as we are here at your service.

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

Carefully check for technical service bulletins in 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 P02E2 code returns. If it does not, then the connections were most likely your problem. If you find out that the P02E2 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 P02E2, 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 P02E2 Code

• Faults in the powertrain control module
• Infirmity in the throttle body assembly
• Foible wiring