Electronic Throttle Monitor Malfunction
Findings, check these first
- Failing throttle monitor circuit
- Intermittent throttle signal
- Software fault needing a PCM update
- Wiring fault
- Failing throttle body
Standard procedure
- Check for companion throttle codes
- Inspect throttle connectors
- Check for PCM calibration updates
- Monitor signals for dropouts
- Replace the throttle body if confirmed
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: P1581 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1581: Electronic Throttle Monitor Malfunction
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.
- P1581 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes
live reference page (obd2-codes.co)
Supports: Ford meaning for P1581: Electronic Throttle Monitor Malfunction
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 P1581. Include your vehicle, the issue and a source if you have one.