P0606

DTC P0606 ECM / PCM Processor

DESCRIPTION

DTC Detection Condition:

The ECM continuously monitors its internal processors (CPUs), A/F sensor transistors and heated oxygen sensor (HO2S) transistors. This self-check ensures that the ECM is functioning properly. This is diagnosed by internal "mirroring" of the main and sub CPUs to detect processor errors. If outputs from the processors deviate from the standards, the ECM will illuminate the MIL and set a DTC immediately.

NOTE: First check for an exhaust gas leak around the HO2S if P0606 is present. An exhaust gas leak generates noise in the HO2S output. The ECM may interpret this as an HO2S transistor malfunction and set P0606.

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunctions Thresholds:

MONITOR DESCRIPTION

Step 1:

Step 1(Continued)-3:

Step 3(Continued):

INSPECTION PROCEDURE