two codes P0508 and P0245

2001 VOLVO S40

150,000 MILES • 1.9L • 5 CYL • TURBO • 2WD • AUTOMATIC

RANYRIZK

MEMBER
39 POSTS

Dear
I disconnected the battery of my Volvo S40 1.9T due to an accident for one month.I would like to know how to relearn the Idle. now I have these two codes P0508 and P0245 Best regards

Aug 13, 2015 at 1:55 AM

KASEKENNY

✓ASE Certified Mechanic
18,907 POSTS

Both of these codes are called signal low codes. That basically means that you probably have a short to ground in some wiring.

What I would do is start with running through the P0245 code testing and find out what is there to know if we have a wiring issue.

More than likely this is a different wiring issue for each code but I suspect you have had some mice chew a couple wires, so we need to look for signs of nests and then check the wiring in that area.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please see the specific testing for the codes below. Let us know if you have other questions. Thanks

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Oct 17, 2021 at 2:39 PM