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DTC P1616: Communication Error from ECM to Distance Control ECU: Description

The ECM is the only component that has a function to store and output DTCs in the dynamic radar cruise control system. Therefore, if the driving support ECU detects a communication error from the ECM, it sends a malfunction signal back to the ECM.

DTC Code DTC Detection Condition Trouble Area
P1616 While the vehicle speed is 50 km/h (30 mph) or more with the cruise control switch on, the ECM continuously receives a logical error signal from the driving support ECU for 0.15 seconds or more.
  • ECM
  • Driving support ECU