P0740 vw

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P0740 vw

While engine trouble codes are somewhat well understood these days, automatic transmission codes are still confusing many out there. One of the reasons for this is the lack of uniformity between different transmission systems, which often makes troubleshooting them somewhat tricky. This is a check engine light code that could potentially make your vehicle difficult, or impossible to drive altogether. The P code means that your transmission control module, the computer tasked with controlling your automatic transmission, has registered a problem with the torque converter clutch circuit. In other words, your torque converter is not functioning normally, and the cause is most likely a mechanical issue of some sort. One positive thing about this particular error is that its causes are usually benign. The torque converter is a crucial piece of any powertrain that uses an automatic transmission. The torque converter works by utilizing transmission fluid to transfer the power from the engine to the transmission. It consists of a pump , a reactor , and a turbine. The pump and turbine look very similar as they both feature metal fins fanned all around their circumference. The main difference between these two components is the orientation of the fins and the components they are attached to. The pump is driven by the engine, while the turbine drives the transmission. The whole system works as follows — the engine spins the pump, which spools up the fluid inside the torque converter. The fluid is then passed through the reactor where its direction of flow is optimized before it hits the turbine. The turbine then sends the power further to the automatic gearbox.

The process of diagnosing the torque converter will differ from car to car. I want to finally tackle this problem and I was hoping you all could help, p0740 vw.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. The code is still pending and isnt official but i fear it will be as its a new issue that arous. First time i seen it.

While engine trouble codes are somewhat well understood these days, automatic transmission codes are still confusing many out there. One of the reasons for this is the lack of uniformity between different transmission systems, which often makes troubleshooting them somewhat tricky. This is a check engine light code that could potentially make your vehicle difficult, or impossible to drive altogether. The P code means that your transmission control module, the computer tasked with controlling your automatic transmission, has registered a problem with the torque converter clutch circuit. In other words, your torque converter is not functioning normally, and the cause is most likely a mechanical issue of some sort. One positive thing about this particular error is that its causes are usually benign. The torque converter is a crucial piece of any powertrain that uses an automatic transmission. The torque converter works by utilizing transmission fluid to transfer the power from the engine to the transmission. It consists of a pump , a reactor , and a turbine.

P0740 vw

No matter how much experience you have working with cars, the Check Engine Light always causes a moment of fear. In this guide, we explain the meaning of the P DTC. We look at some common symptoms and show you what might be causing the problem. If you want to diagnose it yourself, we have some helpful steps to get you started later in the article. The P trouble code indicates that the Powertrain Control Module PCM detected an abnormal reading from the torque converter clutch circuit.

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In other words if the valve was fully closed ie not by passing to get correct pressure wouldn't that indicate that the pressure was not keeping up? For a better experience, please enable JavaScript in your browser before proceeding. Please consider creating a new thread. I would suggest diagnosing or having someone diagnose why you have the EGR code. However, the owner before me didn't do a whole lot of cleaning. Resources Latest reviews Search resources. The whole system works as follows — the engine spins the pump, which spools up the fluid inside the torque converter. The best way to avoid dealing with the P error is to prevent it from happening in the first place. Basically you have three choices. Explore Our Forums. It consists of a pump , a reactor , and a turbine. Either the shutter or the piston is inoperable. Thread starter DavidFoertsch Start date Mar 20, Plug the device into your car and run a full scan.

Are you facing some problems with erratic shifting and you have diagnosed the P code? Well, if that is the case, then you are at the right place because there will be a lot to cover on this topic where we will learn how to tackle this problem.

Then again, if the clutch fails to activate, you could experience a transmission fluid over-temperature condition as the presence of a clutch serves to cool the AT fluid inside the torque converter. Top Contributors this Month View All. This is an older thread, you may not receive a response, and could be reviving an old thread. EDIT: 4th option I thought of later 4. One positive thing about this particular error is that its causes are usually benign. Search forums. More - The fan was bad too so both fans are now new - perhaps the fan was giving hot coolant to the trans cooler. As for the P code that is usiually not a good sign. Make sure the valve body is rebuilt with the trans because this is where the problem usually lies. A new valve body was installed according to the shop although now I am a bit suspect. Volkswagen ID Forum. You would have no way to pinpoint whether the leak in pressure was stemming from the valve body or from somewhere else. The system hasnt finished testing the secondairy air yet so it very well may come back up too but it may not, as ive never had a problem with this either.