What does P1189 mean on a Ford?

P1189. Pump Speed Signal Fault (Diesel). Applies to Ford diesel models with electronic injection control.

What causes P1189 on a Ford?

Failed pump speed sensor Damaged speed signal wiring Excessive sensor air gap Metal debris on the sensor tip Controller input fault

How do I fix P1189 on a Ford?

Inspect the sensor tip for debris Check the air gap to spec Test signal output during crank Verify wiring continuity Replace the sensor if no signal is present

Code

P1189

Pump Speed Signal Fault (Diesel)

Category: Powertrain - Fuel/Air Metering
Severity: Check Engine Light
Applies to: Ford diesel models with electronic injection control
Related: No single generic twin. See OBD Codes List

Findings, check these first

Failed pump speed sensor
Damaged speed signal wiring
Excessive sensor air gap
Metal debris on the sensor tip
Controller input fault

Standard procedure

Inspect the sensor tip for debris
Check the air gap to spec
Test signal output during crank
Verify wiring continuity
Replace the sensor if no signal is present

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: P1189 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1189: Pump Speed Signal Fault
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.

Last updated 2026-09-05.

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