SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSFORD2004FOCUS ZX5, 2.3 Z, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS - CNG, FLEX-FUEL & GASOLINEDIAGNOSTIC TROUBLE CODE (DTC) CHARTSP1405 - DPF EGR SENSOR UPSTREAM HOSE OFF OR PLUGGED
2004 Ford Focus ZX5, 2.3 Z, Standard

P1405 - DPF EGR Sensor Upstream Hose Off Or Plugged

2004 Ford Focus ZX5, 2.3 Z, StandardSECTION P1405 - DPF EGR Sensor Upstream Hose Off Or Plugged
P1405 - DPF EGR SENSOR UPSTREAM HOSE OFF OR PLUGGED

Description:  While driving, the EGR monitor commands the EGR valve closed and checks the differential pressure across the EGR orifice. The test fails when the signal from the DPF EGR sensor indicates EGR flow is in the negative direction.
Possible Causes: 
  • The upstream hose is disconnected.
  • The upstream hose is plugged (ice).
  • Plugged or damaged EGR tube.
Diagnostic Aids: 
  • Look for signs of water or icing in the hose.
  • Verify the hose connection and routing (no excessive dips).
  • Verify the DPF EGR sensor for proper mounting and function. View the DPF EGR PID while applying and releasing vacuum directly to the sensor with a hand pump.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Vehicles with an EGR System Module (ESM) - GO to HH: Exhaust Gas Recirculation System Module (ESM) STEP 29 GO to HH: Exhaust Gas Recirculation System Module (ESM) STEP 29
All Others - GO to HE: Exhaust Gas Recirculation (EGR) Systems STEP 27 GO to HE: Exhaust Gas Recirculation (EGR) Systems STEP 27
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.