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P0011 + P0012 + low oil pressure on warm idle engine

1.7K views 8 replies 3 participants last post by  k.hummel68270  
#1 · (Edited)
I recently did a big repair on my 307 1.4 16v petrol (KFU) engine. Cylinder head got cleaned and leveled, Head gasket, oil pump, both camshafts, all valve lifters and all valve stem seals, all other seals, timing belt, water pump, thermostat, piston ring on leaking piston, oil pressure sensor, camshaft sensor got replaced. I flushed oil 3 times now within one week. Removed and cleaned oil pump filter, I Replaced oil filter itself 4 times.

Yes this already costs me a lot of money.

But the main problem is still there: 😭

After flushing cooling system through and through, I still see buildup of oil in the coolant reservoir. Maybe it's from hoses that didn't got flushed, but i doubt that.

The engine runs great. No weird noises. No loss of power. No problems at all when using my own senses.

But still, like before, which was the main reason for the repairs, when the engine is warm and the oil obviously thinner, and approach red traffic lights, and engine has to run below 1000 rpm, "STOP, LOW OIL PRESSURE" warning pops up with 3 beeps.

I can't stop in the middle of the road so when I add gas, when gear in neutral, and increase rpm above 1000, the annoying mystery problem goes away.

Only to return at the next traffic stop.

This problem only occurs at warm engine at low rpm. And no physical hearable problem is noticed. The engine runs fine. It doesn't hesitate, it doesn't halt or fluctuate.. It run perfectly fine and stable at idle.

After clearing computer, the stop low oil pressure always comes together with p0011 and p0012 "pending" error when Reading odb error.

So to be clear, these errors never come without each other. And only when engine is running idle when hot.

Oh, yes the oil level is max.

What the hell is this problem? I am starting to pull my hair out and I want to burn my own car down 🤬. I'm about to give up

The only thing I can think of now is the vvt solenoid and maybe the oil pump chain might be overstretched.
The VVT solenoid reads 9.2 OHM, and the wires that connect to it give me only 2volts. But yeah, that's when i put the key in the car without running eninge. I'm not sure if it's ok to run engine without vvt solenoid connected to test.
 
#3 ·
Thank you for giving an update after resolving the problem. I have a similar issue, with low oil pressure code appearing sometimes. I belive in my case it is the oil pump pressure solenoid valve which is close to the oil filter. Did you change this solenoid? or was it for the variable valve timing? Oil pump was changed 50 000 km ago, oil pickup tube clean.