D3 Main Relay opens too early / too late - main relay open circuit - P0687 ECM/PCM Power Relay Control Circuit High
Main Relay opens too early / too late - main relay open circuit - P0687 ECM/PCM Power RelayControl Circuit High
Partial frosting and sweating of lines combined with poor cooling, fan belt slipping, loss of refrigerant, restricted or clogged liquid line or expansion valve malfunctioning.