Comment on P0175 – System too rich, bank 2 by AJ

A

AJ

Guest
I have a 2001 BMW X5 (E53) M54
I’m getting PO175 and PO172 system too rich.
I’ve already changed my MAF. What else could be a fuel related issue?

Continue reading...
 

grcauto

Hero Member
Joined
May 29, 2014
Messages
711
Points
28
Fuel pressure??
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
11,069
Points
63
Location
St-Hyacinthe, Quebec, Canada
Could be the connector @ MAF, or you may have a crack in air intake boot. Common on these 3.0ls/M54.

175 and 172 are rich codes for both banks. So look there. Reading fuel trims would say maybe if this is a "false rich" symptom.

Unmetered air is not like a vac leak for a fuel leak. So please post back what LTFT's are doing. Most intake boot rips or tears should cause a lean condition, but should not be overlooked.

Again, as I said, a very common problem.
 

Attachments

Last edited:
Top