DTC Advanced Diagnostics: P0605 (3.0L Engine)

DTC P0605: Powertrain Control Module (PCM) ROM Failure

General Description

The powertrain control module (PCM) calculates the cyclic redundancy check (CRC) of the read only memory (ROM) that is used on functional safety field, and checks the consistency with pre-calculated CRC. If there is an inconsistency between the calculated CRC and the pre-calculated CRC, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type

Execution	Continuous
Sequence	None
Duration	-
DTC Type	One drive cycle, MIL on

Enable Conditions

Condition
Vehicle	ON mode

Malfunction Threshold

There is an inconsistency between the calculated CRC and the pre-calculated CRC at least 2 times.

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.

PCM internal circuit failure (ROM controller)

Diagnosis Details

Conditions for setting the DTC

When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, the freeze data, and the on-board snapshot are stored in the PCM 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, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.