DTC P0600: Serial Communication Link Malfunction: General Description

The multiplex communication is executed among the engine control module (ECM)/power control module (PCM), the gauge assembly unit, and the multiplex control unit (MPCS).

Each unit transmits a signal to the other units and controls the other unit's use of the necessary information.

When the communication from another unit cannot be received for a certain period of time or when an abnormality of the received data occurred a certain number of times, each unit detects a communication abnormality and a DTC is stored.