Service Information

Captiva

DTC P0606 - LNP or LNQ

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0606 00: Control Module Processor Performance Malfunction

Circuit/System Description

These DTCs apply to internal microprocessor integrity conditions within the engine control module (ECM). This diagnostic also addresses if the ECM is not programmed.

Conditions for Running the DTC

P0606

•	The ignition is ON.

•	The DTCs run continuously once the above condition is met.

Conditions for Setting the DTC

P0606

The ECM detects an internal EEPROM malfunction.

Action Taken When the DTC Sets

DTC P0606 is a Type A DTC.

Conditions for Clearing the DTC

DTC P0606 is a Type A DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

P0606

Observe the Freeze Frame/Failure Records with a scan tool.
Clear the DTCs with a scan tool.
Ignition OFF for 30 s.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.

⇒	If DTC P0606 failed this ignition, replace the K20 Engine Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for ECM replacement, setup, and programming

Repair Verification

Ignition ON, observe the scan tool Diesel Particulate Filter (DPF) Soot Accumulation parameter. The parameter should be less than 70%.

⇒	If greater than the specified range, perform a Diesel Particulate Filter (DPF) service regeneration. Refer to Exhaust Particulate Filter Cleaning .