The meaning of the car engine P2782 Code is necessary to know the problem and this engine code has come on the car engine code reader after machine test. The problem of the car engine should be solved as soon as possible. The PCM has noticed a fault in the electrical circuit of the downshift switch circuit. The switch, system cabling and connectors, and mode actuator are all included in this circuit. Some vehicles will need multiple disappointment cycles in order for the fault indicator lamp to be illumined. Some cars will never illumine the service engine soon spotlight for this code.