BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
Post Reply
Thread Tools Search this Thread
      11-25-2019, 03:37 PM   #1
Second Lieutenant

Drives: Space Grey E92 M3 6 spd
Join Date: Oct 2017
Location: vancouver

iTrader: (0)

Exclamation P0491 & P2297 error codes, help?

My check engine light has been going on and off for a couple weeks now. I had the P0491 code last winter, interestingly it seems to only come up in cold weather temps, I did not get it all throughout the spring and summer months and it happens now again. Also I replaced my pre cat o2 sensors less than a year ago, with addition I have a HFC X pipe with no primary cats and a stage II tune. I am aware that you can delete the secondary air valve with a tune but not sure about the P2297 code...

I am not so worried about the P0491 code as I plan to delete it with a tune, but the P2297 code states "o2 sensor out of range during deceleration Bank 1 Sensor 1".

Ive searched around online, but the information and threads are very limited. If anyone could provide any insight or advice it would be much appreciated.
Appreciate 0
Post Reply


cel, check engine light, error code, o2 sensor, secondary air valve

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -5. The time now is 09:13 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.,,,,,,,,, logo and trademark are properties of BIMMERPOST