Guide To P02E5 OBD Error Code Solutions

<<See All OBD Codes

The OBD code decreased engine performance can be defined as a diesel intake air flow control stuck closed.

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 P02E5 diesel intake air flow control stuck closed is set when a closed condition of the diesel intake air flow control is detected. This code could start triggering because of mechanical or some electrical that is DIAFCS motor circuit issues. These cannot be overlooked during the troubleshooting stage, when dealing with some intermittent issue.

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

• The DIAFCS motor/control might be failed
• Short to voltage in the signal circuit to the DIAFCS motor/control
• Open in the signal circuit to the DIAFCS motor/control
• Defects in the powertrain control module
• Short to ground in the signal circuit to the DIAFCS motor/control

1. Air Intake System - Defective car Air Intake System can be a major reason why P02E5 code depicts. So, make sure to replace it online so that you don’t have to face any further issues.
2. Mass Air Flow Sensor - Everything is okay with the Intake Air System and still OBD code P02E5 triggering? Then there must be some defects in Mass Air Flow Sensor. Replace them as soon as possible.
3. Powertrain Control Module - If everything is alright with Intake Air System then there is surely some defect in Powertrain Control Module. Get it replaced before the situation gets worse.
4. Throttle Body Assembly - P02E5 code can display due to some defects in the Throttle Body Assembly. So it is very important to replace the auto leaks with us at equitable prices.
5. Engine Control Module - Do you remember when was the last time you got your car Engine Control Module checked up? A defective Engine Control Module can cause a lot of issues like displaying P02E5 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

• Electronic throttle control symbol might start flashing
• Issues in the indicator light on
• No regeneration of the diesel particulate filter to burn off the soot build up
• Issue of loss of power
• Low idle speed

The repairs which you will have to do to correct this fault code are simply straightforward; you can surely pinpoint the necessary repairs on the basis of your diagnosis. Have a look at some common fixes:

• The air intake system should be repaired or replaced
• Replace the powertrain control module if it is defective
• If you find out that the throttle body is defective, then it should be replaced
• You can always replace the faulty engine control module
• There is no need to get strained if your OBD Code is still flashing up as we are here at your service.

Have a look at our superior variety of k&n cold air intake, fuel pressure regulator, mass air flow sensor cleaner and many more. Now all your problems would vanish within no time.

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

You must 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 P02E5 code returns. If it does not, then the connections were most likely your problem. If you find out that the P02E5 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 P02E5, 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 P02E5 Code

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