P1246
Alternator Load Input Failed
Findings, check these first
- Intermittent load sense connection
- Failing current sensor
- Chafed sense wiring
- Corroded terminals
- PCM input fault
Standard procedure
- Wiggle-test the sense harness
- Monitor load input for dropouts
- Clean terminals
- Inspect routing for chafing
- Replace the sensor if dropouts persist
Code lookup
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Sources and review
Review: checked against the recorded source material.
- OBDII.pro: P1246 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1246: Alternator Load Input Failed
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.
- P1246 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes
live reference page (obd2-codes.co)
Supports: Ford meaning for P1246: Alternator Load Input Failed
Fetched directly. obd2-codes.co phrasing matches the engine-codes family, so it counts as one publisher.
Last updated 2026-09-05.
Report a correction for P1246. Include your vehicle, the issue and a source if you have one.