Ford Codes List

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655 Ford-enhanced codes on file

Code
P1924

Fuel Additive Level Circuit Low (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 actually low or empty
  • Shorted level sensor circuit
  • Failed level sensor
  • Corroded connector
  • Module fault

Standard procedure

  1. Refill the additive tank first
  2. Test the level sensor
  3. Check for shorts in the circuit
  4. Inspect the connector
  5. Replace the sensor if the tank is full but reads low

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Sources and review

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Last updated 2026-09-06.

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