B1520 Hood Switch Circuit Open
What does B1520 mean on a Ford?
B1520 — Hood Switch Circuit Open. This Ford-enhanced code applies to Focus, F-150, Explorer with hood ajar monitoring.
Common causes of B1520
- Failed hood ajar switch
- Open switch circuit
- Corroded hood switch connector
- Misaligned hood striker not closing the switch
- Damaged harness at the hood hinge
How to fix B1520
- Verify the dash warning matches actual hood state
- Test switch continuity open and closed
- Check hood alignment and striker
- Inspect hinge-area wiring for breaks
- Replace the switch per test results