Ford Codes List

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

Repair Order

655 Ford-enhanced codes on file

Code
P1930

Fuel Additive Level Too Low/Empty - Secondary (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

  • Secondary tank or chamber empty
  • Transfer pump failure between chambers
  • Leaking secondary chamber
  • Faulty secondary level sensor
  • Blocked transfer line

Standard procedure

  1. Check all additive chambers
  2. Test the transfer pump
  3. Inspect for leaks
  4. Verify secondary sensor operation
  5. Repair the transfer path or sensor

Code lookup

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Sources and review

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Last updated 2026-09-06.

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