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What is code 43 - Lenovo Computers & Internet

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Code 43 Error Message

The Code 43 error is one of several Device Manager error codes. The Code 43 error will almost always display in the following way:
"Windows has stopped this device because it has reported problems. (Code 43)"
Details on Device Manager error codes like Code 43 are available in the Device Status area in the device's properties: How To View a Device's Status in Device Manager.

Cause of the Code 43 Error

A Code 43 error is generated when Device Manager stops a hardware device because the hardware reported to Windows that it's having some kind of unspecified problem.
This extremely generic message could mean there's a true hardware issue or it could simply mean that there's a driver problem that Windows isn't seeing as such but that the hardware is being affected by.

Error Code 43 Troubleshooting

Restart your computer if you haven't done so already.

There is always the chance that the error Code 43 you're seeing on a device was caused by some temporary problem with the hardware. If so, a restart of your computer might fix the Code 43 error.

Note: Some users have also reported that powering off their computer completely (not just a reset) and then turning it back on has corrected their Code 43 issue, especially if it exists on a USB device. In the case of a laptop, turn it off and remove the battery, wait a few minutes, and then put the battery back in and start the computer.

Did you install a device or make a change in Device Manager just before the Code 43 error appeared? If so, it's very possible that the change you made caused the Code 43 error.

Undo the change if you can, restart your PC, and then check again for the Code 43 error.

Depending on the changes you made, some solutions might include:

Posted on Jan 23, 2013

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Code 43 is almost ALWAYS a driver problem, not necessarily an external driver, it could even be one of Windows' own. There is a well-written (in my opinion) page at http://pcsupport.about.com/od/errorc/a/code-43-error.htm which discusses the error and how to fix it in simple, step-by-step fashion.

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Code 43 Error Message

The Code 43 error is one of several Device Manager error codes. The Code 43 error will almost always display in the following way:

"Windows has stopped this device because it has reported problems. (Code 43)"

Details on Device Manager error codes like Code 43 are available in the Device Status area in the device's properties


rror Code 43 Troubleshooting

  1. Restart your computer if you haven't done so already.

    There is always the chance that the error Code 43 you're seeing on a device was caused by some temporary problem with the hardware. If so, a restart of your computer might fix the Code 43 error.

    Note: Some users have also reported that powering off their computer completely (not just a reset) and then turning it back on has corrected their Code 43 issue, especially if it exists on a USB device. In the case of a laptop, turn it off and remove the battery, wait a few minutes, and then put the battery back in and start the computer.

  2. Did you install a device or make a change in Device Manager just before the Code 43 error appeared? If so, it's very possible that the change you made caused the Code 43 error.

    Undo the change if you can, restart your PC, and then check again for the Code 43 error.

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How to Fix a Code 43 Error

  1. Restart your computer if you haven't done so already.

    There is always the chance that the error Code 43 you're seeing on a device was caused by some temporary problem with the hardware. If so, a restart of your computer might fix the Code 43 error.

    Note: Some users have also reported that powering off their computer completely (not just a reset) and then turning it back on has corrected their Code 43 issue, especially if it exists on a USB device. In the case of a laptop, turn it off and remove the battery, wait a few minutes, and then put the battery back in and start the computer.
  2. Did you install a device or make a change in Device Manager just before the Code 43 error appeared? If so, it's very possible that the change you made caused the Code 43 error.

    Undo the change if you can, restart your PC, and then check again for the Code 43 error.

    Depending on the changes you made, some solutions might include:
  3. Reinstall the drivers for the device. Uninstalling and then reinstalling the drivers for the device is a possible solution to a Code 43 error.

    Important: If a USB device is generating the Code 43 error, uninstall every deviceunder the Universal Serial Bus controllers hardware category in Device Manager as part of the driver reinstall. This includes any USB Mass Storage Device, USB Host Controller, and USB Root Hub.

    Note: Properly reinstalling a driver, as in the instructions linked above, is not the same as simply updating a driver. A full driver reinstall involves completely removing the currently installed driver and then letting Windows install it over again from scratch.

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c/p;

What is code 43?

Code 43 is "fuel supply system."

This code will trip when the ECU and the readings from the o2 sensor don't get along(in layman's term or easy enough for Si Speed to understand biggrin.gif) read the above two threads).

How to diagnose and fix?

First things first, when was the last time you changed your O2 sensor? Start by replacing that first because most likely, that's the main culprit. Now, you may wonder why doesn't the CEL indicate code 41(heated o2 sensor)? Usually when the o2 sensor is completely dead, that code will trip. Also, even though the o2 sensor is working, the voltage or ground isn't 100% Because of that, it will correlate with code 43.

If replacing the o2 sensor did not help code 43 to disappear, next thing is to replace your fuel filter. A clogged fuel filter will also trip code 43.

Next up, did you install an aftermarket Fuel Pressure Regulator? I have a few friends with 3rd gen Preludes and both of them installed aftermarket FPR's and they too, trip code 43. Him and a lot of people who install aftermarket FPR's mess with the PSI and that will cause code 43 to appear(on a stock ECU mind you). Bring it back to stock PSI to help fight code 43.

Those are the 3 main culprits that will cause code 43 from my experiences. Injectors, spark plugs & wires, most likely anything "fuel' related that isn't working properly will also cause code 43.

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