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If you're new to forums in general, be sure to check out the Forum FAQ. To start viewing posts, select the forum section that you want to visit from the selection below. Results 1 to 3 of 3. Thread: Fault code Thread Tools Show Printable Version. My Photo Gallery: 0. My Classifieds: 0. Fault code Guest-only advertisement. Register or Log In now! I have a check engine light on and had it read by a local vag-com owner.
I tried googling it but can't come up with anything specific. Has anyone had any experience with this error? Bump, still looking to figure out what is causing this. What are you experiencing? What problems have you had other than the CEL? I'd drag her into the stealer if you get the chance - depending on your problems. Moderator yeah, I'm pretty sure this needs to happen too It's a fact.
That's the kind of car that can get people pregnant. Well done sir. A tip of the hat to you. Bookmarks Bookmarks Digg del. All times are GMT The time now is PM. Audizine is not endorsed by or affiliated with Audi AG.Forums New posts Search forums. Media New media New comments Search media. Resources Latest reviews Search resources.
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Any one have any ideas, I have search the web and have not found the same code reported on other VWs, but I did find it on the dodge sprinter forum and some other full size diesel truck forums. Bumping this up, I was hoping someone has seen this before. Stutgart Veteran Member. Lemme think The good ol' EGR. Its like automotive engineering designers know they have all this hot exhaust gas and ought to do something with it. So, they started to use it to help emissions way back in the 60s.
And its been with us ever since. Diesels never had emission systems, but they do now, big time. Your TDI is an example of a workable way to keep a diesel from having a lot of objectionable emissions, its a friend of the earth, me too! Beijing today looks just like LA in the late 60's, choking on smog.
At any rate, your car with k likely has a balky or just plain non-functional EGR valve. Change it out for a new one. Good bye P Lots of hot rod guys, God bless their hearts, have been removing or blanking or otherwise deviating from the manufacturers egr design for decades, and will continue to do so for decades to come, and not just with the egr.
BUT today's TDI, your TDI, includes an element of exhaust cooling which those pesky engineering designers somehow utilize and include in the control algorithm to keep your car clean and efficient.
So, messing with the egr messes with exhaust gas temperature; inadvisable for the average motorist. The hot rod guys know that their messing around is why they have a fire extinguisher in the rear driver side footwell, right?! EGR is especially essential in clean diesels as NO is formed in heat of compression.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 is on diagnostic inspection. The P code indicates that there has been a malfunction in the exhaust gas recirculation EGR system. This code may also be present in conjunction with P Depending on the make and model in question, the vehicle may use an EGR position sensor, or it may measure manifold air pressure and exhaust feedback to ensure the right amount of air pressure is present.
The P code can be caused by a number of things that are common across virtually all vehicles. These include the following:. There are very few symptoms associated with the P code, other than the Check Engine light illuminating. However, some drivers may notice reduced fuel economy, hesitation under acceleration and rougher than usual engine operation.
Next, the mechanic should test drive the vehicle to see if the code resets. Next, the mechanic should conduct a visual inspection of all the vacuum lines in the EGR system. Note that damaged vacuum lines are actually the most common cause of the P code, not a failed or blocked EGR valve. After inspecting the vacuum lines, the wiring and all connections should also be inspected and repaired or replaced if necessary. If there is sufficient vacuum for the system, the EGR valve should be inspected.
Some units contain the solenoid itself, while it is separate on other vehicles. The solenoid should be diagnosed, followed an inspection to determine if the EGR valve itself is clogged or blocked. Note that if the EGR valve is electronic, rather than vacuum-operated, the mechanic will need to use a scanner to operate the EGR for testing while the engine idles.
The single most common mistake when diagnosing the P code is immediately assuming that the problem is the EGR valve. Not only will replacing the valve not solve the problem, but these parts are actually more expensive than many other fixes. The P code may not affect your ability to drive the car very much, but it can be an issue.
It will also prevent your car from passing emissions testing and should be repaired as soon as possible. Exhaust gases must be re-burned in order to improve fuel economy while reducing the amount of vapor expelled into the atmosphere.
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 Our certified mobile mechanics perform over services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools.
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.
Excellent Auto Repair Ratings. YourMechanic Auto Repair. Recent Check Engine Light is on Inspection reviews. Excellent Rating.You may also find a discharged battery. In addition, Audi has found that the LIN cable connecting the vehicle electrical system control module, J, to sensor G may be pinched or cut.
But the A6 and A8 are not affected by this type of failure. Audi has issued an updated pressure sensor that solves the problem.
P0420 Code – Meaning, Symptoms, Causes & Fixes
Start your diagnosis by checking for a refrigerant leak at the G pressure sensor. If you find a leak, replace the sensor with the updated part. If the refrigerant pressures are good and you find no leak, pursue normal diagnostics. Next, check the LIN cable connecting the vehicle electrical system control module to sensor for cuts or chaffing.
Also, check the wire terminals in the connector at sensor G for proper attachment or possible corrosion, and for any pins that may be pushed back or widened. They include wiring diagrams and technical service bulletins. In most cases, their diagrams are right from the factory manuals. Pricing: Eautorepair. So you have to refer to the factory legends to learn the identification symbols and then refer back to circuit diagrams to find the splice and ground locations.
If you need to dig into your doors, dash or console, Alldatadiy. Find this article useful? Share it!No Malfunction recognized. Control Unit Breaks. Transmission Control Unit. Control Module. Actuator cold flap V Actuator warm flap V Actuator shut-off valve Defrost and Dashboard Vents right V Actuator shut-off valve Defrost and Dashboard Vents left V Actuator warm flap center console in the back on the right of V Actuator warm flap center console at the rear left V Actuator cold flap center console in the back on the right of V Actuator cold flap center console at the rear left V Actuator Design screen left V Actuator Design screen center V Actuator Design screen right V Tracers Defrost at the rear left E Tracers Defrost in the back on the right of E Tracers outlets in front on the left of E Tracers outlets in front center on the left of E Tracers outlets in front center on the right of E Tracers outlets in front on the right of E Tracers outlet center console at the rear left E Tracers outlet center console in the back on the right of EThe P code can be a bit tricky to diagnose correctly, as you think that you have fixed the fault and then km later, the light pops up again.
This code is triggered when the engine control unit recognizes a faulty catalytic converter. It uses one O2 sensor in the front of the exhaust, and one O2 sensor in the rear of the catalytic converter to measure the efficiency of the catalytic converter.
In this article, you will learn everything you need to know about the P code to fix it once for all. P means that the efficiency of the catalytic converter is below the threshold. The ECM uses two O2 sensors, one in the front and one in the back of the catalytic converter to measure the efficiency.
If the efficiency is low, the P code will be triggered. We receive a lot of messages from our customers about the P code. It keeps coming back after several repairs, and you are just wasting more and more money in the workshop for repair costs. The P code may confuse a lot of people because there is much false information about it out there. The front O2 sensor measures the mixture, and it tells the engine control unit if the engine is running with a rich or lean mixture and adjusts it.
The rear O2 sensor is just a diagnostic O2 sensor for the p code. If the rear O2 sensor is getting faulty values, the p code will get stored in the engine control unit. It could be because the catalytic converter is defective, or a false alarm because one of the O2 sensors is damaged. There could also be a lot of other problems with your engine that are destroying the catalytic converter, and if you install a new catalytic converter, it may be damaged again.
A lot of people think that lean or rich mixtures could trigger the trouble code. Yes, they can, but not in the way you think. You will probably not have any symptoms except check engine light with just the P code itself, and you may have other problems with your engine that are damaging the catalytic converter that can have symptoms like rough idlerough acceleration, misfiresand hard shifting. Always fix these problems first. The most common cause is the catalytic converter itself.
Diagnostic Code Lookup
Some cheaper catalytic converters may not be enough, and in some cases, you have to buy an excellent catalytic converter from the manufacturer. I have also seen catalytic converters that have been installed too far away from the engine on the exhaust pipe. Because of this, the catalytic converter will not get hot enough, and it will trigger a P code. These are just possible solutions, and you should never replace parts without doing proper diagnostics; it will only waste your money if you are unlucky.
Check further down in the article if you want to find out how to diagnose this p trouble code properly in the same way as a skilled automotive technician would do it. There are a few things that are known for damaging the catalytic converter, which can cause the P code; here are the most common:.
Many things could cause the O2 sensors or the catalytic converter to fail.Tricasts are not accepted including unnamed favourites. The above also applies to bets placed for racing in Dubai. Ice HockeyAll games must start on the scheduled date (local stadium time) for bets to have action. Team Totals Odd or Even - If your team doesn't score bets will be settled as Even. For settlement purposes the following website and box score details will be used to determine settlement times:AHL www.
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