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Can I ignore these CEL codes - EDM - faulty voltage and others Topic is solved

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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abscate
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Re: Can I ignore these CEL codes - EDM - faulty voltage and others

Post by abscate »

12.2 volts is a deeply discharged battery, down to its last 20% of charge.

Can you put it on a charger for a day?

In the fine country ofCanada , batteries over 5 years old are at end of life.
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Thenextman
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Year and Model: 2004 Volvo XC70
Location: Toronto, ON

Post by Thenextman »

I could do this - borrowed an ancient car charger from a colleague. He says it works. Think it's worth a go?

Do I disconnect the battery to do this? What setting would you put it on - 12V 2 A or 12 V 10 A?

Thanks abscate,

beigg
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Post by beigg »

I'd disconnect the battery (leave in car if you want to not lift it out) and cycle it from 10a & 2a setting every hour for eight hours keeping an eye on it for excessive heat. It should not be cooking hot and a pronounced sulfur smell (rotten eggs) shouldn't emit during this process.
ugh smh 850 Turbo fridge

Thenextman
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Year and Model: 2004 Volvo XC70
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Post by Thenextman »

Thanks for all the tips guys.

I pulled the battery and charged it for about 7 hours today, cycling between 2 and 10 amps as @beigg suggests.

Put battery back in. Alarm sounded for about 3 minutes despite locking and unlocking doors with FOB but checked itself after a little time with the engine on.

Battery was reading ~ 12.5 v. Drove 25 km, reading 12.4v. Drove another 25 with radio loud and heat on high - 12.3v (may have had cabin lights on for these tests) Drove 2 minutes home - 12.55v with only trunk cab light on- 14.4v with car running.

AND Check engine light gone right when I replaced the battery.

Don't want to say I'm out of the woods yet, but 55 clicks with no CEL yet. Fingers crossed!

Thanks for your help so far guys.

Thenextman
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Year and Model: 2004 Volvo XC70
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Post by Thenextman »

75 km and no CEL - going to say this is ok for now. Thanks all.

Paul

beigg
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Post by beigg »

Awesome!
ugh smh 850 Turbo fridge

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