tunni4264

hi just brought my first e60 530i petrol 2004 and need some advice please it has loads of fault codes stored ill start by giving codes and then symptoms thanks
p0599
0302
0301
0300
0171
0174
0303
0313

car is missing on idle but drives fine once above idle i know what codes are but dont know if its down to air leak or more also ocasionally my traction control light comes on and indicator wont self cancel many thanks adam

banglenot

First, get a BMW compatible code reader (Carly for BMW is a simple app favorite). Clear all the codes and recheck. Old codes are stored and could have happened anytime over the life of the car.

tunni4264

hi thanks for reply my code reader will read and cleared them about a week ago and within the day i had lean bank 1 and 2 the other codes followed a day or so later thanks

seanjordan20

How many miles is on the car? If you bought the car from a person then I would do regular maintenance on the (high mileage) car then see what you get. Plugs, boots, O2 sensors, oil, filter, check injectors, coolant (May want to change thermo and temp sensor). I would next check for vacuum leaks. There is probably one some where. This I think will clear up most of your issues. The vacuum leak is a hard on to solve because it can be anything. Clean your valve body and MAF and maybe get an EGR. It being an 04 it has a lot miles on it and the owner probably did not maintain it well.

Now you do not have to do all these things but this will definitely solve your issues. If you had INPA you could probably pin point 75% of the issues and save a few $$$.

tunni4264

hi thanks for that my code reader will do a live data and she has done 190k full service history i have noticed a slight oil leak have moved coils plugs etc to check because it always throws cylinder 2 misfire first then other codes follow there is no flap on disa valve but someone must have removed as not in inlet one thing i did today was unplug maf and idled alot better but miss was still there also notice if i am in low gear about 1500 revs i can feel a surge just dont want to be changing loads of parts many thank

seanjordan20

Since you have the history you can eliminate things on the list. I named things that could cause the codes and you can troubleshoot from there. You started out by saying you just bought a car no other info so I listed what I would change if I just bought a car and had no idea of maintenance schedule. For example you said you moved the coil and plugs and still throwing code for cylinder 2. Have you checked the injector. It could very well be your issue. If you are not mechanically inclined nor have BMW software your are at a big disadvantage and this forum can only "suggest". Only you know the history of the vehicle and your abilities. If you put more detail into your post you might get better responses but the codes listed can have many solutions. So look at the list I gave you, eliminate, and you will solve your issues. Also you said the DISA is missing the flap then you might want to buy a rebuild kit.

Also in the list i pointed out things that only require you to buy canned cleaners (MAF, injectors, valve body) start there. Then work your way to vacuum leaks

tunni4264

quick update decided to take off inlet manifold today and first of all found sealant around disa valve and then round thotle body and inlet manifold gasket was split so hopfully found my problem i will keep you updated when i have built her back up many thanks

banglenot

An '04 has an M54 engine. Definitely replace the DISA valve, or get a kit from
https://www.germanautosolutions.com/...repair_kit.php

Read the discussion above about effects of DISA valve failure.

Common fail on M54's -- sounds like a previous owner was a real hack.