23 Voltage supply 3 - Coolant control valve and reverting valve (UB3) electrical - Short to bat at UB3 with Key 15 off - P20A3 Vent valve (Reductant Purge Control Valve) - Short circuit high
Voltage supply 3 -Coolant control valve and reverting valve (UB3) electrical - Short to bat at UB3 with Key 15 off - P20A3 Vent valve (Reductant Purge Control Valve) -short 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.