Ford Codes List

Ford-enhanced trouble code lookup
for Ford, Lincoln and Mercury.

Repair Order

655 Ford-enhanced codes on file

Code
P1925

Fuel Additive Level Circuit High (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

  • Open level sensor circuit
  • Failed sensor reading high
  • Disconnected tank connector
  • Broken wire
  • Module fault

Standard procedure

  1. Reseat the tank connector
  2. Test circuit continuity
  3. Measure sensor output
  4. Repair wiring faults
  5. Replace the sensor if the circuit is good

Code lookup

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Sources and review

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Last updated 2026-09-06.

Report a correction for P1925. Include your vehicle, the issue and a source if you have one.

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