P1405 DPF EGR Sensor Circuit High Voltage Detected
What does P1405 mean on a Ford?
P1405 — DPF EGR Sensor Circuit High Voltage Detected. This Ford-enhanced code applies to F-150, Ranger, Explorer, Taurus.
Common causes of P1405
- Failed DPFE sensor stuck high
- Shorted sensor signal wire
- Blocked downstream hose raising differential
- Poor sensor ground
- Reference voltage fault
How to fix P1405
- Check DPFE hoses for blockage
- Test sensor voltage KOEO
- Inspect wiring for shorts
- Verify the ground circuit
- Replace the sensor after hose and circuit checks