Advanced Diagnostics

DTC P0602: Engine Control Module (ECM)/Powertrain Control Module (PCM) Programming Error




General Description
The engine control module (ECM)/powertrain control module (PCM) is equipped with an update program to update its control program. The programs in the CPU of the ECM/PCM are classified as an ECM/PCM program (update-capable program) and a program for the update function (non-updateable program). The program update only updates the ECM/PCM program. When the ECM/PCM power is turned off during an update, the power for the update function is lost, and the update process stops. When the program update is stopped before it is completed, the ECM/PCM stores a DTC that indicates the update is not finished.




Monitor Execution, Sequence, Duration, DTC Type, OBD Status




Enable Conditions

Malfunction Threshold
The ECM/PCM program update is stopped before it is finished for at most 1 second.

Diagnosis Details

Conditions for illuminating the MIL
When the ECM/PCM program is not written in the ECM/PCM, the DTC is stored in the ECM/PCM memory.

Conditions for clearing the MIL
The DTC will be cleared when the ECM/PCM program update is complete.