Engine-Codes - Ford - P1406 2008 Ford Focus

P1406 2008 Ford Focus Code - DPFE Sensor Circuit Downstream Hose

- Code Popularity: 5,007 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P1406 2008 Ford Focus?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Downstream hose is disconnected
  • Downstream hose is plugged (ice)
  • Plugged or damaged Exhaust Gas Recirculation (EGR) tube
  • Faulty Differential Pressure Feedback Electronic (DPFE) sensor
  • Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
  • Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection
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How to Fix the DTC P1406 2008 Ford Focus?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1406 2008 Ford Focus code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1406 2008 Ford Focus Code Mean?

The purpose of the Exhaust Gas Recirculation (EGR) system on your engine is to limit oxides of nitrogen (NOx) emissions. This is done by redirecting small amounts of exhaust gas back through the upper intake to get mixed in with the air/fuel charge.
While driving, the exhaust gas recirculation (EGR) monitor commands the EGR valve closed and checks the differential pressure across the EGR orifice. The test fails when the signal from the differential pressure feedback EGR sensor continues to indicate EGR flow even after the EGR valve is commanded closed.
P1406 2008 Ford Focus Code - DPFE Sensor Circuit Downstream Hose

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