DTC P0602 (Generator Motor Control Module)

DTC P0602:  Generator Motor Control Module Programming Error

General Description 

Courtesy of HONDA, U.S.A., INC.

The generator control processor in the motor control module can be reprogrammed with updated software. The generator control processor confirms if the control program update is completed normally. When the power is interrupted during reprogramming, the generator control processor detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type 

Execution	When the power is turned on after updating is executed and it failed
Sequence	None
Duration	-
DTC Type	One drive cycle, MIL on, POWER SYSTEM indicator on

Enable Conditions 

Condition
Vehicle	ON mode

Malfunction Threshold 

The power is interrupted during reprogramming, and the generator control processor is not updated and programmed normally.

Possible Cause 

NOTE:  The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

• Generator control processor program unwritten

Diagnosis Details 

Conditions for setting the DTC 

When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the motor control module memory.

Conditions for clearing the DTC 

The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.