AutoCodes – Ford – P1405 2011 Ford Focus

P1405 2011 Ford Focus Code - Differential Pressure Feedback Sensor Upstream Hose Off or Plugged

Quick Answer

The purpose of the Exhaust Gas Recirculation (EGR) system on your engine is to limit oxides of nitrogen (NOx) emissions. Common causes include Faulty Differential Pressure Feedback Electronic (DPFE) sensor (EGR pressure sensor), Plugged or damaged EGR tube, Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P1405 2011 Ford Focus indicates Differential Pressure Feedback Sensor Upstream Hose Off or Plugged.
Common causes: Common causes include Faulty Differential Pressure Feedback Electronic (DPFE) sensor (EGR pressure sensor), Plugged or damaged EGR tube, Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 5,524

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1405 2011 Ford Focus Description

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 indicates EGR flow is in the negative direction.

OBDII Code P1405 2011 Ford Focus - Differential Pressure Feedback Sensor Upstream Hose Off or Plugged - AutoCodes.com — P1405 2011 Ford Focus Code - Differential Pressure Feedback Sensor Upstream Hose Off or Plugged

What does this mean?

What are the Possible Causes of the DTC P1405 2011 Ford Focus?

Faulty Differential Pressure Feedback Electronic (DPFE) sensor (EGR pressure sensor)
Plugged or damaged EGR tube
Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection

How to Fix the DTC P1405 2011 Ford Focus?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1405 2011 Ford Focus code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.