For information about the supported orientation to set up the Dell P2421 monitor, see the monitor orientation section of this article. Article Properties Refer to Note#2 if the vehicle is fitted with an air pump. If the scanner confirms that the pump is not working, consult the manual to determine the color-coding, location, routing, and function of each wire in the pump control circuit. Perform a thorough visual inspection on the wiring, and look for damaged, burnt, corroded, or otherwise damage wiring and connectors. Repair all wiring and/or connectors as required.

If the fuel filer cap proves to be gas tight, the smoke in the EVAP system will escape through all and any other leak paths, but be aware that it might take several minutes for small leaks to become visible. Do NOT assume that there are no leaks if none show up in the first few seconds; some leaks are sometimes so small that even with smoke, it might take some minutes before they become apparent. Step 7 PCM failure is a rare event, and the fault must be sought elsewhere before any controller is replaced Your Dell P2421 Monitor has an integrated diagnostic tool. Hardware diagnostic helps determine if the screen abnormality issue is with the monitor or the video card on your computer.If no visible damage to vacuum lines is found, disconnect the line at the point where it connects to the inlet manifold, or the charcoal canister, and connect the outlet of the smoke machine to the vacuum line.

The standard monitor stand is detached when it is shipped from the factory. To learn how to attach the standard monitor stand, see the user manual of the Dell P2421 monitor.

Please comment below describing your issue as well as the specifics of your vehicle (make, model, year, miles, and engine), Note that on some applications, a dedicated air pump is used to pressurize the EVAP system at set intervals as a means of detecting leaks in the system. In these designs, compressed air takes the place of fuel vapors, but the principle remains the same- the system should contain the compressed air without any significant pressure drops occurring. Note that on these designs, failure of the pressure pump can also set code P2421.