My car turned on the check engine light on my Audi A3 1. After scanning it with my OBD-reader, I got the following error codes:. This fix applies to my model, Audi A3 with a 1,9 liter diesel engine — but should be process should be valid on most VAG cars, Volkswagen, Audi, Skoda etc. DPF or the Diesel Particle Filter is a filter in the exhaust system that gathers soot from the exhaust and burns it, leading to cleaner emissions. This process helps to burn off soot from DPF and cleans the filter, making the engine breather a little easier.
This part of the fix is optional, but I highly recommend it to clean the filter and make everything a bit nicer for the new sensor. Drive about 20 km 12,5 miles with your RPM between and for the regeneration to complete.
Basically driving around with lower gear than usual. You need to adapt the sensor for it to work properly. Whole process is explained in the video above. Its recommended to save a report before clearing any codes. If your fix worked, the motor indicator light should be off and the fault code should not appear back in the fault code list. You are all done! Published in Cars. Your email address will not be published.
P2453 - DPF pressure sensor
GUNGFeb 11, It's a differential pressure sensor so has 2 inlets. One goes to the DPF the other goes to atmosphere. So the atmosphere side usually has a short rubber pipe on it. GUNGFeb 16, Hello can the dpf pressure sensor still be faulty when vcds does not display it as a fault.
You don't need to calibrate a DPF pressure sensorthe same as you wouldn't need to calibrate a temperature sender or an EGT probe. Not all of the soot is burned off. Oil that is burnt in the engine creates ash in the DPF that can't be removed. A DPF has a finite life and will eventually need to be replaced. If you have VCDS then look at the readings from the sensor. When the ignition is on and the engine is not running there will be no pressure in the exhaust so the differential pressure should be 0.
Start the engine and you will see a low reading. As you rev the engine exhaust gas flow increases and differential pressure will increase. Can anyone provide link to one they've found reliable please.
TheToughGuyAug 27, You must log in or sign up to reply here. Show Ignored Content.This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. This trouble code will only appear on diesel engines and it indicates that the powertrain control module has detected a voltage reading from the fuel filter pressure sensor that is outside the range of acceptance set by the vehicle manufacturer.
The fuel filter could be clogged or saturated to the point that is is breaking down this would indicate that it was not changed at regular intervals. Symptoms of this trouble code being stored that the driver could potentially experience would include:.
If this code is stored for a long period of time, it could potentially cause a no start condition. This code works almost like an indicator that the fuel filter should be replaced. A mechanic would first start the diagnosis of this trouble code with an inspection of the fuel filter.
If the fuel filter has dirty fuel in it or seems to be clogged or restricted, the mechanic would replace the fuel filter, reset the codes, and verify the repair. If this did not resolve the issue, the mechanic would then check the wiring and connector that are associated with the fuel filter pressure sensor to determine if any damage exists.
If any damage exists to these wires, repair or replacement would be required. If the fuel filter pressure sensor is faulty, it would be replaced. The final test the mechanic would perform if necessary would be a powertrain control module function test.
This would determine if the powertrain control module was performing correctly. If not, it would likely require replacement. The fuel filter pressure sensor is often replaced in error when a fuel filter is the actual cause of this issue. The fuel filter should always be the first thing that gets looked at when diagnosing this issue as it is the most common cause. This code would not be considered serious unless it was allowed to be stored for a long period of time.
If this issue gets diagnosed and repaired quickly, this code should have no lasting effects at all. Replacing the fuel filter.
Repairing or replacing wiring or connectors that are associated with the fuel filter pressure sensor.
Replacing the powertrain control module. If the fuel filter is clogged, this can cause excess back pressure in the fuel line and potentially damage the fuel pump. Just with any Check Engine Light, it should be diagnosed and repaired quickly. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle.
Get a quote and book an appointment online or speak to a service advisor at With YourMechanic you can skip the auto shop altogether. They send certified and screened mechanics straight to your door and enable you to save big on car repair and maintenance.
Cost of diagnosing the P code. No more waiting rooms! Our mechanics will come to you to diagnose and fix the P code.
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P2453 – Diesel Particulate Filter Pressure Sensor “A” Circuit Range/Performance
P2453 FORD - Diesel Particulate Filter Pressure Sensor 'A' Circuit Range/Performance
Only after Km!! What do you think?! Replace the sensor with a new one, prone to failures. When you remove the rubber pipe from the sensor, blow into them with compressed air. OK, thanks for advise I order the sensor yesterday Do not touch software. Change the first sensor ,Replace the sensor with a new one, prone to failures. Wasn't cheap the part should comes with a 2 year warranty. KalElMay 30, Hi guys, So, I finally buy new sensor, I've just replaced it, clear the faults, stop and start the engine several times I will see if it's appear after a short drive next week Only on thing, I find this procedure to make the adaptation of the new sensor: After fitting the g sensor adaption is simply as follows: Select engine 01 Login or coding 11 Type in the box and login.
Close controller,exit vcds. Switch ignition off i jumped out and locked the car for 30 seconds to be sure to send everything to sleep.Audi Q7 P if your catalytic convertor fails completely, you eventually won't be able to keep the car running.
Your gas mileage will also be terrible, so you should try and fix it as soon as you can. So you should chech it on our car models. The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time. If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver.
Parts or components should not be replaced with reference to only a P DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. Code Search Please fill the "Code Box" to find engine fault code. Ways to read engine trouble codes. Ways to clear check engine light on car panel.
Check Engine Light Dictionary Ways to clear check engine light on car panel. Main engine trouble code archive on Web. Copyright EngineTroubleCode. Check engine light comes on Engine stalling or misfiring Engine performance issues Car not starting. If one of these reasons for P code is occuring now you should check P repair processes. Now don't ask yourself; What should you do with P code? The solution is here :.We recommend Torque Pro.
This code typically refers to signal or input voltages that fall outside of an expected range. While technologies such as common rail fuel injection and selective catalytic reduction converters have greatly reduced the volume of diesel exhaust emissions that cause smog in urban areas, these technologies cannot eliminate or remove solid particulate matter in diesel exhaust.
As a practical matter, the solid particles in diesel exhaust can only trapped in a filter, and later burned off when the soot load in the filter exceeds a critical level and to do this effectively, engineers and chemists have developed an effective filter that can do just that. In terms of operation, a typical DPF device contains a very fine substrate through which the exhaust gas can flow relatively freely.
However, since the device is designed to capture and contain fine particles, the soot will collect and accumulate in the filter until the soot starts to clog up the substrate, raising the pressure in the exhaust system, which is the underlying mechanism that triggers DPF regeneration events.
In terms of operating principles, the PCM uses dedicated pressure sensors to monitor the exhaust backpressure as a means to determine the soot load in the DPF.
Thus, when the PCM deems the soot load to be excessive based on the exhaust backpressure it will begin a process of regenerating the DPF in one of two ways, depending on the vehicle. One way involves burning off the accumulated soot by raising the exhaust gas temperature, which is typically accomplished by altering the fuel injection timing to allow some combustion to take place in the exhaust manifold.
The other method involves injecting a precisely metered amount of a urea and water mixture aka ADBlue, or Diesel Exhaust Fluid into the exhaust system just before the DPF. In a fully functional system, the urea is converted into ammonia, which then acts as a catalyst that initiates the oxidation of the accumulated soot by raising the internal temperature of the DPF to a level where the soot is effectively consumed by the high temperature. While both systems work very well, DPF regeneration depends both on the way the vehicle is driven, as well as accurate input data from multiple sensors, some of which include exhaust gas temperature sensors, exhaust gas pressure sensors, dedicated NOx sensors, and others.
Provided that all inputs are accurate, plausible, and continuous, the PCM will initiate DPF regeneration whenever it deems the soot load to be excessive, without any inputs from the driver. However, on systems that use a liquid reductant, the regeneration frequency also depends on accurate input data from multiple sensors that monitor the entire reductant injection system. One other factor that comes into play is the mileage driven between regeneration events.
While this distance is not fixed, it is factored into both the way the vehicle is driven, and the operating conditions that obtained since the last regeneration event took place. The image above is a generic representation of the relative location and operating principles of a typical DPF pressure sensor.
As shown here, the sensor monitors the exhaust pressure at both the upstream inlet and downstream outlet of the DPF. In this manner, the sensor is able to determine the pressure difference across the DPF, which serves as the primary input data the PCM uses to determine the soot load, and therefore, the efficiency of the DPF.
When the pressure differential exceeds a maximum allowable threshold, the PCM will initiate a process that regenerates the DPF, thus preparing it to collect and store a new load of soot.
The causes of code P, and indeed, all other DPF related codes are many and varied, but could include one or more of the following. Common symptoms of code P could include the following, but note that some symptoms of code P and other DPF related codes could immobilize the affected vehicle until the root cause of the code s is resolved.
This site uses Akismet to reduce spam. Learn how your comment data is processed. Skip to content. Notify of.Meaning of P engine trouble code is a kind of powertrain trouble code and when your car's 'P Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach.
The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.
Is the fuel pump sometimes not priming when you turn the key to ON II? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs.
The mechanical timing is also something that you should check, as we mentioned above. P DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem.How to Replace DPF Pressure Sensor in an Audi A4 B8
The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.
Engine trouble codes resource center for all car models. Code Search Please fill the "Code Box" to find engine fault code. Select Abadal Schneider Th. Clubsport Yes! Ways to read engine trouble codes. Ways to clear check engine light on car panel. Check Engine Light Dictionary Ways to clear check engine light on car panel. P Engine Trouble Code Meaning of P engine trouble code is a kind of powertrain trouble code and when your car's 'P Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach.
P Fault Symptoms : Check engine light comes on Engine stalling or misfiring Engine performance issues Car not starting If one of these reasons for P code is occuring now you should check P repair processes. Now don't ask yourself; What should you do with P code? Check engine light comes on Engine stalling or misfiring Engine performance issues Car not starting.
If one of these reasons for P code is occuring now you should check P repair processes. The solution is here :.