Engine light on for evap control modual sensor for 2004 Montero sport all wheel drive with 4x4?

It's the EVAP system. Code is for an open or short to ground in the gas tank vent valve. Pin hole in tank might cause a P0442 for a small EVAP leak, if the hole was large enough.

Sure sounds like a bad connection. I would verify with a volt meter that the cable is bad then replace it if it is.

Have you checked or scanned for a Wheel Speed Sensor issue? (WSS)

Sounds like a "WSS" (wheel speed sensor) problem. Each wheel has one. Located on the backside of each hub, between the brake disc and hub bearing. Check for loose connector first. Wire damage? Wiring touching exhaust pipes or rubbing wheel or tire? Look for mud or debris or damage to the sensor's or the rotating sensor ring. ( has a lot of "teeth") Try driving in reverse, in a straight line 25 to 30 feet, then drive forward twice that distance. If that does not clear the warning lamps most auto parts stores can hook into your computer (usually for free) and determine which sensor(s) have an issue. Replacing these sensors is common and simple. You may still need to get the code cleared to turn light off.

80 % of all O2 Sensor Codes are from Vacuum Leaks
or EVAP System Vacuum problems

Engine misfires also set them, to protect the exhaust converter

Have a repair shop get down to the real issue

well LISACOXFLORE this code is to do with the emissions control ,,, (EGR) exhaust gas return or the MAP sensor (manifold absolute pressure sensor ) it should be a soft code meaning the it wont prevent the vehicle from driving, normally this is caused when the sensors needs to be changed or based on the type of fuel you use causes the cheak light to come on

Run hot wire from battery stright to bat. side of coil and see what happens.

its an egr CIRCUIT MALFUNCTION which means can be any type of problem with the whole circuit -- wiring --connections fuses relays etc not just the egr valve more than likely the valve was good need to check and test the whole egr system

Bad 4wd position sensor located on transfer case or bad sensor located on right front axle housing for 4wd engagement position.

when your vehical throws a code and you replace the defective part, you must clear the code or the ecm will still recognize it as an active code.

This was a weakness of the Montero Sport models. If you google Montero Sport 4WD light flashing you will find lots of information. The best troubleshooting article I have found is here: http://4wd.blogeasy.com/article.view.run?articleID=318776 This article is about the Pajero, but the Montero Sport uses the same platform so this article applies.

The Montero Sport uses several switches and vacuum modules to put the system in and out of 4WD. If any of these malfunction, the light may flash continuously, flash intermittently, fail to come on, and it can trigger the anti-lock brake light to come on. In brief, if the 4WD shift lever is engaged, but the transfer case doesn't engage, the sensors show a mismatch and will cause the light to act funny including triggering the vehicle's anti-lock break light. These SUV's need to be shifted into 4WD regularly to keep the switches and mechanisms working correctly.

Try this before you even think about a visit to the $$$$$ Mitsubishi Dealer:
Shift the 4WD lever between 4WD High, Low and 2WD at least 100 times. Often, this will free the mechanisms and resolve the problem. It worked for me after three years of trying everything else including the dealer replacing switches, etc. If this does fix it for you, just be sure to shift the vehicle in and out of 4WD several times at least one a week and this will keep the mechanisms lubricated and functioning correctly. If that doesn't work, try the above link (article). Good luck!

Jeff