P1635Tyre size / axle ratio setting out of range
- Ford code · Engine
- How the car detects it
- The tyre size or final-drive ratio stored in the engine computer is outside the values it accepts. The computer uses it to work out road speed, so speedometer, cruise control and shifting can be affected. It usually follows a module replacement or a configuration change that wasn't completed correctly.
- What you may notice
- Speedometer, cruise control or shifting may be affected
- Likely causes
- PossibleWrong or missing vehicle configuration in the engine computer
- RareEngine computer replaced without full set-up
- Sources
Backed by at least two independent sources.
From Obdaryn's Ford pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.