|
|
08-18-2013, 11:53 PM | #1 |
Captain
107
Rep 805
Posts |
Help: Error code: P0175 system too rich bank 2
Anyone have more detail about this cel I got yesterday? I am on a out of state road trip and had to put 91 octane premium (California premium) in the car and after running 1 1/2 tanks of this stuff through the car I got the cel. I cleared it and so far after 150 miles it hasn't come back.
I usually run 92 octane at home....would dropping to 91 make much of a difference? I am running test pipes for the track and have a tune. |
08-19-2013, 12:20 AM | #2 |
Captain
80
Rep 945
Posts |
P0175 was one, of many, of the codes I got before replacing my low pressure fuel sensor. I had two or three different code sets, including one that put the engine into limp mode. I replaced the sensor 4-5 weeks back and haven't seen any codes since
|
Appreciate
0
|
08-19-2013, 12:55 AM | #4 | |
Lieutenant General
18113
Rep 11,746
Posts
Drives: 2018 M4 Comp Indv
Join Date: Jun 2009
Location: Newport Beach
|
Quote:
Screen shot of the tech report |
|
Appreciate
0
|
08-19-2013, 12:57 AM | #5 |
Lieutenant Colonel
427
Rep 1,947
Posts |
275E - P0175
----- Information saved in: DME ----- Fault code: 275E - P0175 ----- Fault text: Oxygen sensor limit position fault bank 2 ----- Fault description: System Too Rich (Bank 2) ----- Condition for fault identification: Test condition:
Terminal condition: Engine running Voltage condition: none ----- Condition for fault memory entry: Controller limit for K_LAM_DIAG_REG_T (60s) ----- Action in service:
Fault effect and breakdown warning: Engine runs erratically / Potential collateral error: Miss errors and lamda error MIL after engine runs 2x ----- Driver information Warning light: MIL ----- Service instruction none |
Appreciate
0
|
08-19-2013, 01:38 AM | #6 |
Captain
107
Rep 805
Posts |
Thanks all... Appreciate the quick replies. I might start simple ( sensor first)...and if that doesn't help I will look into the actuator valve. The car has been starting a little rough in the mornings when cold...idle dips down pretty low, almost stalls but then bounces back up and is fine.
Maybe the lower octane gas is just a coincidence... |
Appreciate
0
|
08-19-2013, 09:16 AM | #7 | |
Captain
80
Rep 945
Posts |
Quote:
As far as behavior, my car wasn't exhibiting any symptoms other that throwing codes--no rough starts or bucking. Having said that, I think low-speed acceleration was a bit smoother after replacement. Might have been psychological but I don't think so. |
|
Appreciate
0
|
08-20-2013, 12:17 AM | #8 | |
Lieutenant General
18113
Rep 11,746
Posts
Drives: 2018 M4 Comp Indv
Join Date: Jun 2009
Location: Newport Beach
|
Quote:
|
|
Appreciate
0
|
08-20-2013, 12:49 AM | #9 |
Forever Rest In Beats
73
Rep 528
Posts |
1+ what he said. It was the low fuel pressure sensor. Takes like 20-25 minutes to install bro. It's right behind the airbox. Should be good after you install the new one. I did mine a few months ago same code, never came back. Ohh by the way the rough idles stopped after.
Last edited by nujabes24; 08-20-2013 at 12:55 AM.. |
Appreciate
0
|
08-20-2013, 02:46 AM | #10 |
Captain
107
Rep 805
Posts |
So, is there a diagnostic test that will tell me if its the simple sensor that needs replacing or the much more expensive throttle actuator?
|
Appreciate
0
|
08-20-2013, 09:13 AM | #11 |
Captain
80
Rep 945
Posts |
Not sure if there's a diagnostic which will verify for sure. Are you getting any other codes? That was what helped guide me. I got about 5-6 different codes and all of them pointed to the same thing. It was possible that it was a fuel system controller (?) by one code but several threads referenced the other codes as being the low pressure fuel sensor.
If you're up to it, I would look for more codes and make the replacement. It's very common on these cars right now and a very easy fix. Last edited by gimmethemuumuu; 08-20-2013 at 09:18 AM.. |
Appreciate
0
|
08-20-2013, 11:26 AM | #13 |
Captain
107
Rep 805
Posts |
So far I have only gotten the one code. I cleared it, waiting to see if it comes back. It did start rough again yesterday...but didn't throw a code. I'll probably go with sensor replacement first and see what happens.
|
Appreciate
0
|
09-04-2013, 10:11 PM | #14 |
Captain
107
Rep 805
Posts |
Hi Folks - I cleared that code a couple weeks ago and all has been fine...until two days ago when I got a 2nd CEL, but this one is different than the first (P0175). The latest one is: P0092 - "Fuel Pressure Reg 1 Control Circuit High".
Anyone know what this is caused by? Is it related to the other code? |
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|