Advanced Diagnostics

DTC P0602: Powertrain Control Module (PCM) Programming Error




General Description
The powertrain control module (PCM) is equipped with an update program to update its control program. The programs in the CPU of the PCM are classified as a PCM program (update-capable program) and a program for the update function (non-updateable program). The program update only updates the powertrain control program.

When the 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 PCM stores a DTC that indicates the update is not finished.




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




Enable Conditions

Malfunction Threshold
The powertrain control program update is stopped before it is finished, and this condition continues for at least 1 second.

Diagnosis Details

Conditions for illuminating the MIL
When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the PCM memory.

Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.