Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hey, before we get started.
I assume you checked the oil level? just making sure because the P0011 and P0021 and common codes for low oil level as well.
How low is the pressure when checked with a gauge?
Thanks, ***** ***** a couple things on these engines that can cause low oil pressure at idle.
The more common ones are the upper chain tensioners and the rear timing cover gasket at the IVT oil passage plate.
Both of which are pretty labor some repairs.
No the catalytic converter itself wont cause any of these issues.
Did you check the pick up tube to see if it have anything blocking it?
Don't really see many issues with the oil pumps on these engines. Granted any oil pump can fail, just don't see alot of them on these.
The upper chain tensioners guides wearing through the plastic is what will be an obvious indicator for them causing a pressure loss.
Assuming you changed the oil and filter, inspected the rear timing cover gaskets, and secondary tensioners, your looking at inspecting the pick up tube or the oil pump here.
Yes, those codes will come on with low oil level (causing air to get trapped) or low oil pressure.
They also happen with sludge build up, but if you change oil regularly and use Mobil 1 i don't forsee that being remotely likely.
Sorry! got tied up.
Aside from the gaskets there are multiple O-rings behind the rear cover. Realistically anyone could leak, but its the accessible plates on the rear cover with the gaskets that are notorious for leaking. Most times you can even find the gasket material in the oil pan.
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