P1406 – Ford DTC

Ford DTC P1406 – Differential Pressure Feedback Electronic Sensor circuit Downstream Hose

DTC P1406 meaning on Ford

DTC P1406 for Ford refers to an issue with the Differential Pressure Feedback Electronic (DPFE) sensor circuit downstream hose. This code indicates a problem with the sensor that measures the exhaust gas recirculation (EGR) system’s differential pressure.

Ford DTC P1406 symptoms

Symptoms of DTC P1406 on a Ford vehicle may include:

• Check Engine Light illuminated
• Decreased engine performance
• Increased fuel consumption
• Rough idling or stalling

Ford DTC P1406 causes

Common causes of DTC P1406 on Ford vehicles include:

• DPFE sensor failure
• Downstream hose blockage or damage
• Wiring or connector issues in the sensor circuit
• EGR system malfunction

Ford DTC P1406 seriousness

DTC P1406 should not be ignored as it can lead to poor engine performance and increased emissions. While the vehicle may still be operable with this code present, it is recommended to address the issue promptly to prevent further damage.

How to diagnose DTC P1406 on Ford

To diagnose DTC P1406 on a Ford vehicle, follow these steps:

1. Inspect the DPFE sensor and downstream hose for damage or blockage
2. Check the wiring and connectors in the sensor circuit for any issues
3. Use a scan tool to monitor EGR system data and sensor readings
4. Perform a smoke test to check for leaks in the EGR system

How to fix DTC P1406 on Ford

To fix DTC P1406 on a Ford vehicle, you can:

1. Replace the DPFE sensor if faulty
2. Clean or replace the downstream hose if blocked or damaged
3. Repair any wiring or connector issues in the sensor circuit
4. Address any underlying EGR system problems

How to erase DTC P1406 on Ford

To erase DTC P1406 on a Ford vehicle, you can:

1. Use an OBD-II scan tool to clear the code
2. If the issue has been fixed, the Check Engine Light may turn off automatically after a few drive cycles
3. If the light does not turn off, you may need to manually clear the code using the scan tool

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