Configuration Health Check
When you connect to your ECU in Focus Mode, VETuner automatically checks your configuration against a set of sanity rules. This catches common setup mistakes before you waste time chasing tuning problems that are really configuration errors.
When it runs
The checks run automatically after VETuner has read your ECU's current settings. You will see one of three outcomes:
- All clear — everything looks sane. You carry on without interruption.
- Issues found — the Config Health Wizard opens and walks you through each problem one at a time.
- ECU looks unconfigured — every critical check has failed. VETuner offers to load a tune file rather than fixing dozens of individual values.
Critical vs Warning
Issues are divided into two severity levels:
Critical — the engine almost certainly will not run until this is fixed. Examples: cylinder count set to zero, required fuel at zero.
Warning — the engine may run but will behave poorly or unpredictably. Examples: a flat VE table suggesting the ECU has never been calibrated, injector dead time not set, TPS calibration backwards.
What happens when an issue is found
The Config Health Wizard lists every problem and lets you work through them one at a time. Each entry has a description of what is wrong, why it matters, and a Fix it button that opens the correct settings dialog. Fix the value, confirm, and the wizard moves on to the next issue.
Once all issues are cleared you are ready to move on to the Start Doctor for your first crank.
Related guides
- Configuration Health Check Reference — the complete list of every check and how to fix each one.
- Starting Your Engine — the full first-start walkthrough.
- Start Doctor — diagnose no-start behaviour after your configuration is sane.