Speed Control Command Switch Out of Range Low
Findings, check these first
- Shorted cruise switch circuit
- Failed switch pulling the line low
- Chafed clockspring wiring
- Corroded switch connector
- Module input fault
Standard procedure
- Test switch resistances against spec
- Inspect clockspring wiring
- Check for shorts to ground
- Clean the connector
- Replace the switch assembly per tests
Code lookup
Type a code above, or start from a symptom or a common code.
Press / to jump to the box. Ford-enhanced powertrain, body, chassis and network codes. Generic P0xxx codes live on OBD Codes List.
Sources and review
Review: checked against the recorded source material.
- OBDII.pro: P1566 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1566: Speed Control Command Switch Out of Range Low
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.
- P1566 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes
live reference page (obd2-codes.co)
Supports: Ford meaning for P1566: Speed Control Command Switch Out of Range Low
Fetched directly. obd2-codes.co phrasing matches the engine-codes family, so it counts as one publisher.
Last updated 2026-09-06.
Report a correction for P1566. Include your vehicle, the issue and a source if you have one.