Check engine, Pre-collision braking system, Lane departure warning and X mode warning lights turned on while driving in the rain?

Tiny
PATROON
  • MEMBER
  • 2021 SUBARU OUTBACK
  • 2.5L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 24,300 MILES
While driving in the rain, the following lights came on: Check engine, Pre-collision braking system, Lane departure warning, and X mode. Also, none of the control buttons that control any of those were working. This happened one other time while driving in the rain. The lights did not reset themselves and had to be reset manually. This time it was the same and they had to be reset manually. I pulled the code before the reset. It was 2682.
Looking up that code it indicates “Engine coolant bypass valve and control circuit low”.
I don’t understand how that code relates to the warning lights. Please give me some advice on what is going on with my car. Thanks very much.
Saturday, October 21st, 2023 AT 8:58 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

Like you, that doesn't make sense to me either. When this happens, does the engine temperature slowly start to go up? Is there any power loss?

Is the scan tool you are using able to read codes from all modules (CAN)?

Let me know. Also, I would contact a dealership because it should be covered under a 3-year/36K mile bumper-to-bumper warranty. Let them know the code that you had. If this happens again, don't delete the code until the dealership can inspect it.

Also, all of the lights you mentioned seem related. The X mode, however, is related to the 4wd system. This is why I recommend having it checked.

Let me know if your scanner is designed to read all codes.

Here is a link that explains what I'm referring to:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Take care,

Joe
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Saturday, October 21st, 2023 AT 9:29 PM
Tiny
PATROON
  • MEMBER
  • 2 POSTS
Thanks Joe,

My scanner is not a CAN. I reset the lights by just removing the battery cable as my scanner doesn’t have a function to do it. If I take it to the dealer, will they be able to pull any codes since I disconnected the battery to put the lights out? I would like to take your recommendation to have the dealer check it out but if the codes are gone it seems like it would be a waste of time (and money).
Thanks for your reply,
Pat
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Sunday, October 22nd, 2023 AT 4:44 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

If you disconnected the battery, chances are the code isn't present. However, I would recommend contacting a dealership and letting them know the problem existed and you would like it checked when it turns back on. That way they are aware of the issue before the warranty expires.

Since the battery was disconnected, the different monitors need to reset. I suspect when you get to the monitor of the affected parts, the light will turn back on. The only thing you can do to reset the monitors is drive it.

Let me know your thoughts or if you have other questions.

Take care,

Joe
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Sunday, October 22nd, 2023 AT 9:07 PM

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