What causes P1187 on a Ford?

Wrong pump variant coded to the controller Replacement pump without variant programming Corrupted controller memory Wiring fault in the variant sense circuit Failing controller

How do I fix P1187 on a Ford?

Confirm the installed pump part number Program the correct variant with Ford equipment Check variant sense wiring Clear and verify programming stores Replace the controller if programming fails

P1187 Variant Selection Fault (Diesel)

Q: What does P1187 mean on a Ford?

P1187 — Variant Selection Fault (Diesel). Applies to Ford diesel models with electronic injection control.

Category: Powertrain - Computer and Auxiliary Controls
Severity: Check Engine Light
Applies to: Ford diesel models with electronic injection control

What does P1187 mean on a Ford?

P1187 — Variant Selection Fault (Diesel). This Ford-enhanced code applies to Ford diesel models with electronic injection control.

Common causes of P1187

Wrong pump variant coded to the controller
Replacement pump without variant programming
Corrupted controller memory
Wiring fault in the variant sense circuit
Failing controller

How to fix P1187

Confirm the installed pump part number
Program the correct variant with Ford equipment
Check variant sense wiring
Clear and verify programming stores
Replace the controller if programming fails