im getting this code on my 2003 4.7 dak..P0522 Oil Press Sens Low granted i changed my oil etc tuneup..i had the radio going while doing the tuneup maybe because i had the key in ignition the computer didnt reset itself or wouldnt this code go away if the vech was shut off and it noticed it had the 6qrts of oil in it ?
the gauge shows like its working.. but honestly i never looked at it while i was draining..so should i just undue battery leave it unhooked for a few minutes to let pc reset or is there a easier way to reset dak onboard pc .. like taking it to a autozone or something ?

thanks,
Schuey

 

You can delete the code at autozone, which would be the best option. See if it comes back on. If it does, the the oil pressure sensor may be going, IF you have adequate oil pressure.

 

You can delete the code youreself also , Disconect the battery , with that disconected turn your key to acc for 10 sec turn it off connect battery and that will reset the onboard pc . Ive done it several times and never had it not work.

 

^^ it does work just fine, but you also loose all adaptive memory in the PCM, so the truck may not run right for awhile. It can take a couple months to regain that memory.

 

never had a problem with it losing all adaptive memory when I have done it my dak runs just fine afterwards.

 

what is adaptive memory and what does it control ?

 

Adaptive memory is for storing fuel percentages, short term and long term fuel trims. It's the PCM's RAM so to speak. Basically, when the truck runs best a certain way, the PCM stores in the sensor data and what the current fuel trim is. As the truck runs, the PCM stores this data for future use. When it finds those sensors are showing the same values, it knows how the truck runs best, and uses those tables. It's constantly adding to the memory and changing the values as needed.

Clearing this will cause the PCM to delete the info, so it will have to re-learn all these figures. It CAN cause some driveability issues, especially when you have higher mileage on the vehicle. It can cause lower MPG's sometimes, among other smaller issues.

It's not like resetting the PCM by disconnecting the battery is a bad thing. I only said the BEST way to clear stored codes is with a code reader, because then your not re-setting the PCM. It's not like it can't be done, just not the best way to do it.

 

ok well theres my lesson for the day I did not know that. Although I watch my fuel mileage closely as I do different mods and change parts on it and I had never seen a difference in my fuel consumption But then too I do drive a R/T and there is no such thing as good fuel mileage .

 

the problem with pulling the battery is that you lose your drive cycle info...meaning when you plug it back in and drive it you lose your driving table. plus your engine code will still be stored in a pending code bank... that really doesnt do anything but turn off the check engine light. the issue is still there...that can be an issue for many reason...your engine isnt running as efficient as it could....you cant pass an obd state emissions inspection until your truck has gone through a drive cycle, which could take up to 300 miles... it will show sensors not ready, which will fail any obd county emissions check. If your check engine light is on, its on for a reason...the code says, oil pressure sensor low, that doesnt mean low pressure, that means the sensor is sending low voltage, which means its not functioning properly. change the sensor, its not that expensive. if that fails, follow the trail, start with cheapest then work your way up...

 

Drive cycle's are performed every time the vehicle is driven when the correct conditions are met. This info is stored as part of the adaptive memory, but it does not always keep this info when the vehicle is shut off. Some of the drive cycles are deleted. The pass or fail though is kept.

What He^^ said up there is all correct. Just didn't put it in my post. Hell, sometimes it can take 500-800 miles for all the drive cycles to be completed. It's a pain in the ***.