C2 Windshield Washer Heater Fault

I had similar issues with my C2, but it was the washer motor. It worked intermittently, then quit when it got cold. Check the wiring and connections, but don't rule out the motor.

What symptoms did you see with the washer motor, and did they match the error code in my car's memory?

The washer jets were weak and sporadic at first, no error code, just poor performance. Then it wouldn't spray, especially when freezing. Eventually, it failed completely. Given your heater issue and the freezing, it sounds like more than just the motor, especially with the error code. Get a professional to trace the wiring and connections and check the ECUs. It'll save time and aggravation.

Workshop confirmed defective cable/plug connection. Repair cost 95€. Thanks for the help.