Does P0600 mean the computer is bad?

Not necessarily — check grounds and connections first. A corroded ground is a much more common cause than a failed ECM.

Is ECM replacement expensive?

ECMs cost $200-$800 and may need programming. Always rule out wiring issues first.

Medium Severity

Electrical System

Communication error within the ECM or between the ECM and scan tool.

Common Fix

Repair ground connection or replace ECM

Estimated Cost (DIY)

$0 - $500

ECM internal faultpossible

Poor ground connectionlikely

Damaged OBD2 portpossible

Need to read or clear this code?

Does P0600 mean the computer is bad?: Not necessarily — check grounds and connections first. A corroded ground is a much more common cause than a failed ECM.
Is ECM replacement expensive?: ECMs cost $200-$800 and may need programming. Always rule out wiring issues first.

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