DTC P0606:00 [L5]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSES

DTC P0606:00	PCM processor error
DETECTION CONDITION	The PCM internal CPU malfunction. Abnormal voltage applied to PCM ignition switch terminal Diagnostic support note This is a continuous monitor (CCM) The MIL illuminates if the PCM detects the above malfunction condition during first drive cycle. FREEZE FRAME DATA is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Voltage of 1 0 V or more is applied to PCM ignition switch terminal even though ignition switch is off. PCM internal CPU malfunction

DTC P0606:00

PCM processor error

DETECTION CONDITION

The PCM internal CPU malfunction.
Abnormal voltage applied to PCM ignition switch terminal

Diagnostic support note

This is a continuous monitor (CCM)
The MIL illuminates if the PCM detects the above malfunction condition during first drive cycle.
FREEZE FRAME DATA is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

Voltage of 1 0 V or more is applied to PCM ignition switch terminal even though ignition switch is off.
PCM internal CPU malfunction