CEM-1C01 L-signal Signal too high (vida dice)

carboncow · Post by **carboncow** » 16 Aug 2011, 19:58

While troubleshooting what I suspect is a bad alternator in our 2001 V70 T5 I was looking at all the errors in the Vida DiCE CSC. For for the CEM is as mentioned in the subject and says "signal too high".

Does anyone know what this pertains to and if low voltage from a bad voltage regulator can (and how) cause this?

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Post by **jimmy57** » 16 Aug 2011, 20:24

1st code: maybe bad connection to the sensor on the CCM panel or can be low battery voltage related.
2nd code: low battery voltage clear and check later to see if it returns
3rd code: low battery voltage
4th code: Loose or missing bulb in rear

I would clear codes and not worry about any of those.
Did the key get left on long enough for the message display to show "low battery voltage"?

carboncow · Post by **carboncow** » 16 Aug 2011, 20:29

Thanks Jimmy...wasn't sure if the 2nd code was related to the low voltage of the bad alternator and/or voltage regulator since it was saying "signal to high".

That first one has always been there and never bothered to get another fan/sensor so I will check the connection as someone may have been in there before.

Post by **xHeart** » 23 Jan 2019, 11:49

An old thread, but found it relevant today.
I'll clear and check again. Meanwhile, why a long list of Checking...?

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