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Help with fault codes

Old 08-27-2018, 07:56 PM
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Default Help with fault codes

Hello all, new to the forum and hoping someone might be able to help me.

We have a 2008 LR2 which has been functioning perfectly, all of a sudden the check engine light came on.
We got the codes read and it came up with three codes -- p0458,p0057 ,p0051, It seems there must be something common causing all of these..
They all seem voltage related.

Any ideas ? Where can I start looking to try to diagnose this ?

Any help appreciated as I do not know where to start.

Old 09-12-2018, 03:18 PM
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Wow, no one has any idea ?

I guess this is rare.
Old 09-14-2018, 10:14 PM
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When the battery gets old electrical gremlins show up

how old is the battery?​​​​​​

for my LR2 the fuses in the engine compartment got corroded when my battery failed

i replace all of my fuses

i also replaced a few relays

get a copy of the electrical diagram and check what’s in common with the codes

here is a video of a Volvo owner that did exactly that

note: the xc90 in the video has an almost identical engine to the 3.2 in your LR2 and the electrical system should be very similar if not identical

good luck

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