Hi Was wondering if anyone can shed some light on my issue i scanned my car mercedes w204 CDI 62 Plate C Class 115,000 miles i have foxwell nt310 scanner on 28th Jan came up with Fault Code P2600 Coolant Pump Control Circut Open then on 29th the engine light came up and stayed on for 2 days , called aa out they scanned it came up with same fault , could be coolant sensor or wiring then yesterday engine light went off and pending code is no longer coming up , so the question is has it fixed itself which i doubt or a matter of time until the pending code is shown again?