BMW M5 Forum and M6 Forums banner

check engine

  1. flickering CEL, coolant temp sensor?

    E34 M5 Discussion
    I've got a 91 US model and I recently started getting a flickering check engine light. I pulled the code, 1223, coolant temperature sensor. I also get an occasional moment where the water temp gauge drops to zero, then returns on its own. Given the random flickering of the CEL, I figured it...
Top