P0117 code after reconnecting battery-2004 C320 4Matic Sedan
At one point, before the new alternator, the voltage at the battery was down to 9.5V while the engine was running. After the new alternator it read 14.5-13.5V at the battery when the engine was running.
Any ideas? I didn't have this problem before. Could it be that since the voltage went down so low that it affected the coolant temp sensor somehow?
Thanks,
Joe



