The P1405 engine code indicates a faulty differential pressure feedback sensor on the Ford Vehicle, according to Engine-Codes.com. This sensor monitors the exhaust gas recirculation tube pressure. When the issue occurs, it triggers the service engine light.
What is EGR valve sensor?
The EGR position sensor detects the movement and position of the exhaust gas recirculation (EGR) valve pintle. The EGR pressure sensor detects exhaust gas flow through the EGR passage.
How do I fix code P0405?
What repairs can fix the P0405 code?
- Replacing the EGR position sensor after the wiring is checked to be okay.
- Repairing the wiring short to the EGR position sensor or connector signal return.
- Repairing an open in the voltage reference to the EGR sensor.
