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

A

AJ

Guest
#1
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...
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
9,133
Likes
159
Points
63
Location
St-Hyacinthe, Quebec, Canada
#3
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: