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Discussion Starter #1
2013 Volt Base

Pulled out of the driveway, made it maybe 40 yards then heard clunking sounds then CEL, returned to driveway, called Onstar and got the codes: C1207 C1225

These both seem to be related to the ABS, but it's hard to find anything on Google. Anyone know anything about these codes?
 

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2013 Volt Base

Pulled out of the driveway, made it maybe 40 yards then heard clunking sounds then CEL, returned to driveway, called Onstar and got the codes: C1207 C1225

These both seem to be related to the ABS, but it's hard to find anything on Google. Anyone know anything about these codes?
Visit a dealer soon. Especially if it's ABS-related, you don't want to drive around with no ABS in the winter. You should be able to drive it to a dealer, assuming you don't need to stop fast on a slick surface, but try not to any more driving than you have to before you get it fixed.
 

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I just found this elsewhere on the forum: https://service.gm.com/gmspo/mode6/pdf/2011/11OBDG01 HYBRID Diagnostics.pdf

I'm not sure if it's for Gen 1, Gen 2, or both, but I would assume most of the DTCs should be the same for both generations. According to the manual, C1207 is "Left Front Wheel Speed Sensor Circuit Low", and C1225 is "Left Front Wheel Speed Sensor Range/Performance". They're both consistent with each other: your left-front WSS is malfunctioning.

You probably won't have proper traction control or ABS, but you should still be able to drive to a dealer.
 

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I just found this elsewhere on the forum: https://service.gm.com/gmspo/mode6/pdf/2011/11OBDG01 HYBRID Diagnostics.pdf

I'm not sure if it's for Gen 1, Gen 2, or both, but I would assume most of the DTCs should be the same for both generations. According to the manual, C1207 is "Left Front Wheel Speed Sensor Circuit Low", and C1225 is "Left Front Wheel Speed Sensor Range/Performance". They're both consistent with each other: your left-front WSS is malfunctioning.

You probably won't have proper traction control or ABS, but you should still be able to drive to a dealer.
Based on that PDF, and some posts I found on a Impala forum, I think the hub assembly is bad.
Hopefully they will cover it under the powertrain warranty as they are supposed to.
 

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I'd take a look under there and make sure a stick or something didn't rip the sensor wires off, since you heard a clunk. Pretty early in the car's life to lose a hub/bearing.
 

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It was the WSS 13412631.
I have no idea how it was damaged, was driving maybe 15mph on a clear road, heard/felt clunking/crunching.
But it's fixed after $282.38 and half a day at the dealer. BTW, they had the WSS in stock.

For future reference of anyone reaching this page via a Google search, hubs are covered under drive train warranty, WSS are not. Both are covered under bumper-to-bumper.
 
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