DTC 1174 and 1175
I am preparing to sell my 97 540i with 126K on the odometer. The car has two problems that I would like to fix before I sell it.
The primary issue is that the check engine light keeps popping up. I have scanned the codes and keep getting 1174 and 1175. I clear the codes and the car runs fine for a few day and then the codes pop back up. I just replaced the precat o2 sensors with a pair of new Bosch sensors.