Guide To P047F OBD Error Code Solutions

<<See All OBD Codes

This fault code would start appearing when the incoming signal from the exhaust pressure sensor is not matching intake manifold pressure or ambient air pressure. This can occur due to an electrical circuit fault or sometimes it can be due to mechanical reasons.

The fault code P047F can be defined as Exhaust Pressure Control Valve A Stuck Open.

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

What causes this problem with the Exhaust Pressure Control Valve A Stuck Open?

• There can be some faults in the exhaust back pressure control valve position sensor
• The exhaust pressure sensor might be defective
• Flaws in the exhaust pressure control valve
• There can be open or shorted wiring in one of the exhaust pressure control valve circuits

1. Powertrain Control Module - The P047F code can also arise due to some issues in Powertrain Control Module. So, it is advised to replace them as soon as possible.
2. Engine Control Module - Do you remember when was the last time you got your car engine control module checked up? A damaged engine control module can cause a lot of issues like displaying P047F code.
3. Turbocharger - If everything is alright with PCM, then there is surely some defect in Turbocharger. Get it replaced before the situation gets worse.
4. Exhaust Manifold - P047F code can display due to some flaws in the Exhaust Manifold. So, it is very important to replace the Exhaust Manifold with us at equitable prices.
5. Supercharger - Do you remember when was the last time you got your car Supercharger checked up? A defective Supercharger can cause a lot of issues like displaying P047F code.
6. Manifold Absolute Pressure Sensor - Are there some faults in your Manifold Absolute Pressure Sensor? Don’t waste time and get them replaced or else P047F code can turn up.

Willing to know some common symptoms of OBD Trouble Code P047F? Your wish is our demand. Have a look at them below:

Common Symptoms

• There can be a delay in the engine warm up
• The car engine might stall or stumble when cold
• Decrease in the overall engine performance when cold
• There can be some other exhaust back pressure codes

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 P047F:

• If there are some defects in the exhaust back pressure control valve position sensor, then it should be replaced
• Repair or replace the exhaust pressure sensor
• The quirky exhaust pressure control valve should be corrected
• Make sure that the open or shorted wiring in one of the exhaust pressure control valve circuits is repaired properly
• Restore the powertrain control module

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade Body Control Module, Fuel Shut Off Valve, DPFE Sensor, EGR Sensor, Exhaust Valve Control and a lot more for our precious customers.

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

There would be a need of reliable vehicle information source to diagnose a code P047F. Other tools needed:

1. A diagnostic scanner
2. A digital volt/ohmmeter (DVOM)
3. An infrared thermometer with a laser pointer

Once you have done a careful visual inspection of system related wiring and connectors, find the vehicle diagnostic port. Connect the scanner to the port and retrieve all stored codes and freeze frame data. Write this information down because it may be helpful as your diagnosis proceeds.

Then the next step would be to clear the codes and test drive the vehicle to see if the P047F immediately returns. If there are intake air temperature codes or engine coolant temperature codes present, diagnose and repair those before attempting to diagnose the P047F. Search technical service bulletins (TSB), which apply to the vehicle, codes, and symptoms in question. If you find one that matches, it will likely aid you greatly in your diagnosis.

• If no obvious wiring or connector issues are discovered, begin by testing the expected voltage signal at the exhaust pressure control valve (with the DVOM). You may need to use the scanner to simulate a cold start condition and activate the exhaust pressure control system. If the appropriate voltage/ground signal is not discovered at the exhaust pressure control valve connector, disconnect all related controllers and use the DVOM to test individual circuit resistance and continuity. Circuits which are found to be non-compliant must be repaired or replaced
• If the correct degree of voltage/ground is discovered at the exhaust pressure control valve, follow manufacturer’s recommendations for testing the exhaust pressure control valve (using the DVOM). If the exhaust pressure control valve pinout test does not parallel manufacturer’s specifications, it should be replaced. If the exhaust pressure control valve and circuits are operable, test the exhaust pressure control valve position sensor or exhaust pressure sensor (as applicable) according to manufacturer’s specifications. Replace failed components as necessary

An infrared thermometer should be used to gain an actual exhaust temperature reading if no scanner data display is available. This could prove helpful to determine whether the exhaust pressure control valve is actually functioning or not. It may also detect a valve that is stuck in either the open or closed position.

• Faulty catalytic converter or muffler will not cause a code P047F to be stored
• Exhaust pressure control systems are most often used in turbocharged/supercharged applications

Common Mistakes When Diagnosing The P047F Code

• The exhaust pressure sensor might be faulty
• Faults in the powertrain control module
• There might be some defects in the wiring