I've got seriously low oil pressure, starts and runs for minute and a half and shuts down. Found I had a missing bolt in the oil pan, would that be enough to cause failure ?

it means the MAP sensor is faulty and should be replaced. I hope this helps you.

"Ticking" may be an indication of a serious issue inside the engine, perhaps bad rod bearing or something like that. Low oil pressure isn't something to ignore.

The CPU has read low oil pressure and has shut down the system to protect the engine which it has done. However it cannot tell when you add oil so to get it to change you will have to reset the CPU.. Possible removing the battery lead for 5-10 minutes will reset or have a code reader instrument reset it.

You could have damaged the oil pump or the pickup screen in the oil pan.
Was the oil pan damaged ?

remove all bolts out pan drop pan but u may have to remove motor mount bolts and raise motor few inches to allow clearance to get pan out

could be low oil pressure...they have a low oil pressure shut down switch to protect the engine from more serious damage

sound like rear main oil seal is leaking.

Lift the front of the car and support it on jack stands. Open the hood. Run the engine for a max of 5 mins. The goal is to warm the oil without making it (or anything you may touch) too hot (avoiding burns). remove the oil filler cap on the valve cover.

Put a pan below the oil filter (drivers side on the 4.6l v-8 engine). Unscrew the oil filter with a suitable oil filter wrench. Counterclockwise rotation will remove it. allow the oil in this area to drain fully.

Move the pan under the engine's oil pan. At it's lowest point there will be an angled bolt. Carefully loosen the bolt (counterclockwise rotation). Expect a healthy stream of oil to flow out quickly. Dont drop the bolt, it has a magnet on the end that will show if you have and metal debris in the engine oil. A few little flakes are nornal, chunks are not and indicates some engine problems.

When the oil has drained out, replace the bolt being careful not to overtighten (it's easy to strip the threads then you will have bigger problems). The washer on the bolt will seal from leaks so no need to overtorque it.

Next fill the filter with fresh oil and rub a slight amount on the rubber gasket seal at the perimeter of the filter. Install the oil filter until the gasket seal touches the milled face of the engine block. Turn 1/4 to 1/2 turn further to seal correctly.

Fill with the required amount of oil. Install the oil filler cap, visually inspect for any oil leaks. If none, start the engine and make sure the oil pressure dash light goes out (or the needle indicates pressure) within 5 seconds. If not, turn off engine quickly. If oil pressure is good, let it run for 1-2 mins. Turn it off, check under the car, and around the fliter for any fresh leaks. With the engine off, check the oil level on the dipstick with the car on level ground. If you need a little more oil to keep the level in the marked area on the dipstick, add some. DO NOT overfill the engine. Engine damage will occur. If you've put too much oil in, remove the drain bolt (as explained above).
Drop your used oil off at a collection depot (dont pour it down the drain, it's totally toxic to organic life).

You're done.

I will assume this is an automatic, if not an automatic you never change the lubricant in a manual unless it has a tear-down for repair. Lets move on, you will need to pull the trans pan off (get the car as high in the air as possible, use jack stands always, be safe not sorry), use and old plastic garbage can lid with holes drilled in it to catch the fluid, put the lid on top of a large drain pan, slowly loosen the trans bolts, fluid will start leaking very soon after they are loose, leave a few in the front just in by a few threads, remove the back bolts and let pan drop down, this will get the most fluid out, then remove pan, clean the pan and the gasket surfaces, reinstall the pan, do not over-tighten the bolts!! it will squeeze out or damage the gasket, we don't want any leaks after all this work. When it is all buttoned up add half the recommended fluid, get trans hot by running engine for 30 minutes or so, then add more fluid, leave it a little low, a 1/2 pint or so, recheck in a few days after driving while engine and trans are still hot, then top off.

HELLO. YES THE BOTTOM OF THE OIL PAN HAS BOLT'S THAT ARE UNDER THE FLY WHEEL.THAT'S WHERE THE FRONT SEAL IS.!! ONE MAYBE TWO THERE.!!! THEN THEY START TO GO ALONG THE SIDE'S OF THE OIL PAN ALL THE WAY TO THE BACK OF IT THEN THERE ARE MAYBE 4 THAT GO'S ARCOSS THE BACK THERE.!!AND NOTHEY DON'T COME IN CONTACT WITH THE OIL FLOW'S THERE ON THE OUT SIDE OF YOUR OIL PAN. U JUST MIGHT NEED TO TIGHTIN THEM UP.? OR U MIGHT HAVE ONE OR MORE MISSING. CHECK TO SEE IF YOU HAVE A YOUR BOLT'S AROUND YOUR OIL PAN, OK LET ME KNOW IF THIS HELP YOU "GOOD LUCK"