2008 S6 throwing codes
Intermediate
Joined: Aug 2008
Posts: 43
Likes: 3
From: Dublin Ohio
It would be instructive to actually look at the signal from the RF wheel speed sensor on an oscilloscope. Everything else is shooting in the dark.
It's possible the plug wires or coils are inducing some sort of interference on the speed signal. Make sure the wires are seated and that the engine isn't misfiring.
It's possible the plug wires or coils are inducing some sort of interference on the speed signal. Make sure the wires are seated and that the engine isn't misfiring.
Thanks.
Intermediate
Joined: Aug 2008
Posts: 43
Likes: 3
From: Dublin Ohio
So we spoke again today. He went through all grounding points, connections, etc. then pulled the EBCM. I was planning on sending it out to get it repaired. Interesting thing though, I am not seeing anyone doing repairs for a C6 EBCM only the C5s. I plan on calling a couple places tomorrow.
Does anyone know if the C6 EBCM can be repaired?
I did find several used ones on eBay, but not sure if they might be short lived too. I was able to find an AC Delco part #89060341 for what looks like the EBCM without the pump. It does contain 4 screws, so that would at least mean that the old one can be removed and the replacement part fitted on the pump.
Either way I would need to engage a dealership to program one off eBay or a new part to my vehicle. The eBay ones are listing $150-250, and the cheapest that I have seen the AC Delco part was $650!!! This is so frustrating.
Thanks.
Does anyone know if the C6 EBCM can be repaired?
I did find several used ones on eBay, but not sure if they might be short lived too. I was able to find an AC Delco part #89060341 for what looks like the EBCM without the pump. It does contain 4 screws, so that would at least mean that the old one can be removed and the replacement part fitted on the pump.
Either way I would need to engage a dealership to program one off eBay or a new part to my vehicle. The eBay ones are listing $150-250, and the cheapest that I have seen the AC Delco part was $650!!! This is so frustrating.
Thanks.
Intermediate
Joined: Aug 2008
Posts: 43
Likes: 3
From: Dublin Ohio
Final Update - Problem Fixed!
I found a replacement EBCM off a 2008 Z06, he swapped it out, it communicated perfectly, no prior codes, so took it for a test drive. After about 7 miles he got the ABS error only (no TC or AH), checked the code and it was the C0040. Changed out the Wheel Hub Assembly and everything was cleared and working fine.
In his early diagnostics, he found the original RF wheel hub sensor had a resistance outside the expected range. That is what must have triggered the EBCM.
Hope this helps.
I found a replacement EBCM off a 2008 Z06, he swapped it out, it communicated perfectly, no prior codes, so took it for a test drive. After about 7 miles he got the ABS error only (no TC or AH), checked the code and it was the C0040. Changed out the Wheel Hub Assembly and everything was cleared and working fine.
In his early diagnostics, he found the original RF wheel hub sensor had a resistance outside the expected range. That is what must have triggered the EBCM.
Hope this helps.
