P1919 Engine Coolant Temperature Signal Fault
What does P1919 mean on a Ford?
P1919 — Engine Coolant Temperature Signal Fault. This Ford-enhanced code applies to F-150, Explorer, Ranger, Mustang.
Common causes of P1919
- Failing ECT sensor with erratic signal
- Intermittent ECT wiring
- Corroded sensor connector
- Air pocket around the sensor
- PCM input fault
How to fix P1919
- Bleed air from the cooling system
- Graph the ECT signal for dropouts
- Inspect wiring and connector
- Compare to a thermometer reading
- Replace the sensor if erratic