What does P1927 mean on a Ford?

P1927. Fuel Additive Level Too Low/Empty (Diesel). Applies to Ford diesel models with additive systems.

What causes P1927 on a Ford?

Additive tank run dry Leaking additive tank or lines Excessive dosing from a stuck injector Faulty level sensor reading empty Missed service interval

How do I fix P1927 on a Ford?

Refill the additive tank Inspect the tank and lines for leaks Test dosing injector function Verify the sensor reads full after refill Replace the sensor if it still reads empty

Code

P1927

Fuel Additive Level Too Low/Empty (Diesel)

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

Findings, check these first

Additive tank run dry
Leaking additive tank or lines
Excessive dosing from a stuck injector
Faulty level sensor reading empty
Missed service interval

Standard procedure

Refill the additive tank
Inspect the tank and lines for leaks
Test dosing injector function
Verify the sensor reads full after refill
Replace the sensor if it still reads empty

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

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Last updated 2026-09-06.

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