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2006 Cadillac STS

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When I started my car yesterday and put it in reverse immediately it started check ABS and Check Power steering. THe brake light and abs light were on. When I tried to turn the wheel it felt very stiff. I have a car doc and I hooked it up. It read a code C0281 (Dynamic rear proportiong performance DRP - brake switch)and a code C0550 (ECU Malfunction). WHen I turned it on later that day it was no longer flashing those warnings and the abs and brake light were off. What could have caused this? Also I hooked my car doc back up and it was still reading the same codes. Any suggestions on what this could be?

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Total WAG; perhaps the electronics were still initializing when you put it into gear (and confused the computer); after the restart everything rebooted and it performed as designed.


'19 CT6, '04 Bravada........but still lusting for that '69 Z-28

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