VZ Commodore ECU Repair
Introduction
The Holden VZ Commodore’s ECU often fails. Common issues include no-start, misfiring, or fuel gauge errors. Here are some symptom and repair options.
Common ECU Problems
VZ V6 ECUs (E55) suffer from heat-related failures. Symptoms include powertrain errors, low fuel warnings and Service Vehicle soon warning. Internal faulty connections cause injector issues.
Diagnosing ECU Issues
Check for error codes like P0201-P0206. Use a scan tool to detect communication failures. Inspect wiring and battery first.
Replacement ECUs
New ECUs are no longer available. Second-hand units need security linking. Reconditioned ECUs are a budget-friendly option for these vehicles.