C30 Electrics : - All kinds of faults while in motion

cytehuop · Apr 6th, 2018, 21:53

I get all kinds of fault codes including anti-skid failure and break failure, but also a number of network codes. It happened about a year ago and I took it to a shop and they said there wasn't anything wrong. They took the electrics apart, cleaned them, and put them back together and it was all OK. If I just let the car rest for 5 minutes they usually go away. Or if I clear them using an app connected to the com port. Is this just crap cabling or could it be something else? I don't fancy another £150 for someone to polish my cables again.

iainmd · Apr 7th, 2018, 10:55

Pretty difficult to diagnose that lot. You really need to plug it into VIDA to get more accurate Volvo codes than just the generic ODB codes to see what's going on.

Peter Budd · Apr 7th, 2018, 12:04

I had an issue once where all kinds of codes were coming up and it boiled down to some cables shorting out following being pinched up.As soon as the short was found all was peace again ...

Acer · Apr 13th, 2018, 19:34

Quote:

Originally Posted by cytehuop

I get all kinds of fault codes including anti-skid failure and break failure, but also a number of network codes. It happened about a year ago and I took it to a shop and they said there wasn't anything wrong. They took the electrics apart, cleaned them, and put them back together and it was all OK. If I just let the car rest for 5 minutes they usually go away. Or if I clear them using an app connected to the com port. Is this just crap cabling or could it be something else? I don't fancy another £150 for someone to polish my cables again.

Are you using a proper Volvo code reader? You won't get any accuracy from the apps that can be downloaded.

cytehuop · May 7th, 2018, 13:18

I broke down again and got towed this time as the reader couldn't connect to the ECU at all. The funny thing -- the car started no problem when the breakdown assistance man wanted to take it down from the tow truck.

The next day I hooked up the car with a DICE and VIDA laptop and got codes showing that there is faulty communication with the BCM and the SWM. Cleared them and tried again, they didn't appear.

Can anyone link a video/provide advice how to check the wires connecting those module to the ECU? I feel like this is a connectivity problem.

Also, if you know any independent Volvo electrician in London I'd be happy to go there instead of doing it myself.

Apr 7th, 2018, 10:55	#2
iainmd Member Last Online: Apr 25th, 2024 13:38 Join Date: Nov 2004 Location: Fife View Photos By: iainmd	Pretty difficult to diagnose that lot. You really need to plug it into VIDA to get more accurate Volvo codes than just the generic ODB codes to see what's going on. __________________ Present: 2009 Volvo V50 1.6D DRIVe SE Past: 2004 Volvo S40 T5 SE

May 7th, 2018, 13:18	#5
cytehuop New Member Last Online: Nov 11th, 2020 12:26 Join Date: Mar 2017 Location: London	Broke down again I broke down again and got towed this time as the reader couldn't connect to the ECU at all. The funny thing -- the car started no problem when the breakdown assistance man wanted to take it down from the tow truck. The next day I hooked up the car with a DICE and VIDA laptop and got codes showing that there is faulty communication with the BCM and the SWM. Cleared them and tried again, they didn't appear. Can anyone link a video/provide advice how to check the wires connecting those module to the ECU? I feel like this is a connectivity problem. Also, if you know any independent Volvo electrician in London I'd be happy to go there instead of doing it myself.

Apr 7th, 2018, 12:04	#3
Peter Budd Junior Member Last Online: Apr 8th, 2021 09:32 Join Date: Dec 2017 Location: Exeter	I had an issue once where all kinds of codes were coming up and it boiled down to some cables shorting out following being pinched up.As soon as the short was found all was peace again ...

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