P0173 / P1622 faults

[Bmwmaniac88]

I have been having these codes for a while now. I went to several shops including Bosch Service, the below has been done and the code still appears.

- Spark plugs changed
- Fuel Filter changed
- Breather and hoses changed

All the intake area was checked for cracks.

Thats as far as i remember.

The Bosch Service guy even sprayed stuff on the intake area looking for leaks.

I'd appreciate some feedback from you guys as im out of thoughts.

On a side note, when i turned my car in the morning it turned on roughly (especially in cold weather) then when i changed the breather and the hoses it was less rough by 90%.

Thanks guys
NN

[MIKYZZ4]

You need a scan performed with a BMW specific scan tool or a computer with BMW software. Standard OBD2 code readers can't communicate with all the computer modules that make up the BMW diagnostic system, but simple P-codes can help with emissions related faults. A smoke test with a real pressurized smoke machine is only sure way of finding all intake leaks.