P1287 Fuel Pulse In Range But Higher Than Expected
What does P1287 mean on a Ford?
P1287 — Fuel Pulse In Range But Higher Than Expected. This Ford-enhanced code applies to F-150, Explorer, Ranger.
Common causes of P1287
- PCM compensating for a lean condition
- Vacuum leak driving pulse width up
- Weak fuel pressure needing longer pulses
- Dirty MAF under-reporting airflow
- Failing pressure sensor
How to fix P1287
- Fix lean causes (leaks, MAF, pressure) first
- Verify fuel pressure
- Clean the MAF sensor
- Compare pulse widths after repairs
- Investigate injectors only if pulses stay high