2004 dodge ram, 1500 2wd 4.7ltr. stopped truck, went to start. cranks only and wont fire. pulled code p0522. replaced oil sensor. still wont start

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1-3-2010 11 years ago and no response. what was the problem

We will have to pinpoint what the engine is missing. 1) spark.2) fuel.3) compression. All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the carto start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should! Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition. Be extremely careful when doing these tests. A simpler test would be to see if it runs on starting fluid. If it does, then you know you have spark and compression and you simply have a fuel delivery problem. if every things check out ok.then other possibility to check out is DOes the PCM ever ground the ASD relay? If not, we first need to check ALL POWERS AND ALL GROUNDS to the pcm to be sure its awake. After that, then we will need to make sure the cam and crank sensors are producing a good signal when cranking the engine over and that the two signals are in sync with each other. This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya

Hi, ill try to help. Did you try to disconnect the battery for about 30 sec and reconnect??? 522 code is oil pressure sensor problem. Disconnect may work for reset, but there may also not be oil pressure? This is the only solution I have right now. Maybe another expert has more info if the disconnect does not work.