Prof.Burrito
03-04-2024, 01:16 PM
Hello, just picked up a 2001 530i m sport. Previous owner has extensive maintenance log and log of replaced parts. I keep getting a P10071&4 code. However I have no loss of power or misfires. Car runs fine. I am getting LTFT of ~-8% on banks 1 and 2. MAF sensor is reading 6.5 g/s at idle with a .5+- variance. Ccv hoses have been replaced by PO. And car was taken to European shop about two weeks ago for the same code and vacuum leak was found and fixed (allegedly) the 02 sensors are fairly new and the MAF sensor was replaced about 30k miles ago or 2 1/2 years ago. I have little to no vacuum on oil fill cap at idle. All air intake rubber parts are newer. I did notice however that the CCV hose connecting to the elbow going into the valve cover isn’t necessarily tight. If I squeeze the hose at the elbow the hose will actually open up some on the side creating a gap.
So could it be something so simple as this hose being the incorrect size? Or something else?
just cleaned the maf sensor and installed new air filter. Previously I would get the code after erasing them every two drives. After the air filter it took about 6-7 drives before the code returned.
So could it be something so simple as this hose being the incorrect size? Or something else?
just cleaned the maf sensor and installed new air filter. Previously I would get the code after erasing them every two drives. After the air filter it took about 6-7 drives before the code returned.