Intermittent check engine light 2003 Ford focus

2003 focus lx Intermittent check engine light…car repair no DTC codes same problem found technical service bulletin mold on PCM removed sealant on wires same problem was told just drive took it back to repair shop .told just drive. Problem: Get off work midnight need reliable car any suggestions appreciated or forums where I could get info thanks

I’m not a mechanic and I have no clue but my best advice is to find a different shop, preferably one with a mechanic who’s been around a while. Not every problem creates a code and then you need a seat-of-the-pants diagnosis.

Unfortunately, that vintage of Focus is notorious for electrical gremlins. Have you had any drivability problems?