A/C Demand Out of Self-Test Range
Findings, check these first
- Self-test run with the A/C switched on
- Failed A/C demand switch input
- Shorted A/C request circuit
- Aftermarket A/C wiring confusing the PCM
- PCM input fault
Standard procedure
- Switch the A/C fully off and re-run the self-test
- Test the A/C demand switch operation
- Inspect the request circuit for shorts
- Check for non-factory A/C wiring
- Diagnose the input circuit if the code persists with A/C off
Code lookup
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Sources and review
Review: checked against the recorded source material.
- OBDII.pro: P1464 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1464: A/C Demand Out of Self Test Range
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.
- P1464 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes
live reference page (obd2-codes.co)
Supports: Ford meaning for P1464: Air Conditioning Demand Out Of Self Test Range
Fetched directly. obd2-codes.co phrasing matches the engine-codes family, so it counts as one publisher.
Last updated 2026-09-04.
Report a correction for P1464. Include your vehicle, the issue and a source if you have one.