Exhaust Gas Recirculation Flow Out of Self-Test Range
Findings, check these first
- Carbon-restricted EGR passages
- Weak vacuum supply during the test
- Failing EGR valve
- DPFE sensor misreading flow
- Test run at wrong engine temperature
Standard procedure
- Run the test at full operating temperature
- Decarbonize passages and valve
- Verify vacuum supply strength
- Check DPFE accuracy
- Re-run the test after service
Code lookup
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Sources and review
Review: checked against the recorded source material.
- OBDII.pro: P1407 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1407: EGR No Flow Detected
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.
- P1407 FORD Code: Meaning, Causes, and Symptoms | OBD2 Codes
live reference page (obd2-codes.co)
Supports: Ford meaning for P1407: Exhaust Gas Recirculation Flow Out Of Self-Test Range
Fetched directly. obd2-codes.co phrasing matches the engine-codes family, so it counts as one publisher.
Last updated 2026-09-06.
Report a correction for P1407. Include your vehicle, the issue and a source if you have one.