oil pressure too low/epc light
Hello , please help me! I have an Audi A5 1.8 tfsi and I got a light on
dashboard when i start the engine, saying "switch off engine oil pressure too
low". It came on and beeped light for 3 times then stopped. There is another
error that appears when i accelerate the car over 4.000 rpm, the EPC light
comes on with the message "Do not exceed 4000 rpm". I changed both
sensors (blue&brown) 2 times, but no result ! What should i do ? Sorry for
my english mistakes btw.
The EPC light comes on because there is one of the following problems: - Fuel pressure sensor harness is open or shorted - Fuel pressure sensor electrical circuit poor connection - Faulty fuel pump - Blocked fuel filter - Fuel line restricted - Faulty fuel pressure regulator - Faulty fuel pressure sensor The computer has detected something that can damaged the engine and has put it into safe mode. I think that you should take the car to the Audi dealer or a reputable mechanic, to have it checked and the problem corrected. Oh, and I did not have any problems reading your post.
I read many forums before and everyone says that EPC LIGHT comes on when there is insufficient oil pressure at high rpm...
Yes, correct, I only sited to you a few of the reasons for the light to come on. The EPC detects numerous functions of the engine and, as in your case, oil pressure is low. Your car has an auxiliary light that indicates the exact problem, while in others, the codes must be run to find the cause. Again, take the car to have it checked to avoid yourself possible big problems.
I checked it, the oil pump is ok, the brown pressure switch is OEM, the blue one is HELLA . what should i do further ?
Alex, how do you know that the oil pump is ok? Did you perform an oil pressure check with a mechanical gauge. OEM means Original Equipment Manufacturer, a company that produces parts for other manufacturers. HELLA is a Geman manufacturer of automobile parts. If the warning lights are still on, what you need to do is have the car inspected by a mechanic. Obviously, you cannot ascertain what the actual problem is, neither can I from a distance. But we know that it is related to the oil because of the "oil pressure too low" and "do not exceed 4,000 RPM.
The oil pressure is 1 bar, the mechanic told me that it's a good value. He also told me the pump is almost new. The error on VCDS was at the brown switch. Maybe it's a wire problem
Well, if you had the car checked by a mechanic and he feels that one bar of oil pressure in the gauge is good; and that the pump is almost new, then you should not have to worry about any problems. If the codes are gone after you replaced the brown switch, so much the better. Just keep an eye on the instruments (gauges) for a few days. Good luck!
I am having the same problem with my 2011 Q5 (3.2). With regards to the “oil pressure too low” I have to get an oil pump. The dealer quoted me a cost of $1,500.00
The mechanic told me that the oil pump is almost new.
Low oil pressure with an almost new pump? Wow I also had to replace the tensioner’s, and the sensor as a precaution.
I have the exact same problem on a 2012 Audi A5, "SWITCH ENGINE OFF OIL PRESSURE TOO LOW" What fixed your Audi?
Did you find a solution for your problem I have my 2011 q5 giving me the same issues plus a codes for crank and camshafts sensors and oil pressure sensor and intake manifold sensor your input is appreciated!!
I had to replace the Tensioners and get a new oil pump.
Sorry my car Audi Q5 2.0 Diesel 2013 also get this message too, so after change tensioner and new oil pump will be fixed it?
After the new oil pump and new tensioners I haven’t had any issues (Thank God)
I got the “oil pressure too low” message as I parked at the airport this morning. I have an 2011 Audi Q5. Will I be able to make it to the dealership to get fixed when I’m back in town or will I need to get towed? What was your experience after the light came on?
I had the same problem. Audi opened the engine and it was a piston. Mileage is only 59000km but apparently the 2008-2012 2.0TFSI engine was problematic
I replace the one pin oil pressure switch at the oil filter, but no change. Where is the 2nd sensor that was mentioned? Part number? The VCDS code that is coming back: 5582 - Oil Pressure Switch for reduced Oil Pressure - P164D 00  - Malfunction The low pressure warning light comes on at low rpm/idle and goes away at higher rpm.
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