What does P1287 mean on a Ford?

P1287. Fuel Pulse In Range But Higher Than Expected. Applies to F-150, Explorer, Ranger.

What causes P1287 on a Ford?

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 do I fix P1287 on a Ford?

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

Code

P1287

Fuel Pulse In Range But Higher Than Expected

Category: Powertrain - Fuel/Air Metering
Severity: Check Engine Light
Applies to: F-150, Explorer, Ranger
Related: No single generic twin. See OBD Codes List

Findings, check these first

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

Standard procedure

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

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: qualified. Read the source limits below.

OBDII.pro: P1287 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1287: Fuel Pulse In Range But Higher Than Expected
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.

Last updated 2026-09-05.

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