2007 Ford Focus C-Max 1.6 TDCi (110) Zetec Euro IV – Workshop Service & Repair Manual

DPF (Diesel Particulate Filter) problems can affect your vehicle's performance and emissions. Here’s how to address them:

1. Initiate Regeneration: Drive at higher speeds to perform a forced regeneration, which helps clear soot from the DPF.
2. Inspect for Blockages: Check the DPF and related pipes for soot build-up or blockages.
3. Examine Differential Pressure Sensor: Ensure the sensor is functioning correctly and is not giving false readings.
4. Clean or Replace the DPF: If regeneration and cleaning are insufficient, consider cleaning or replacing the DPF.
5. Refer to the Manual: Our manual provides detailed steps for diagnosing and fixing DPF issues.

Turbocharger issues can impact engine performance. To resolve them:

1. Inspect for Leaks: Check the turbocharger and connecting hoses for any oil or air leaks.
2. Examine Turbo Components: Ensure that the turbocharger is free from damage and the shaft has minimal play.
3. Check the Wastegate: Verify that the wastegate is functioning correctly and is not stuck.
4. Replace Air Filter: A clean air filter can help prevent turbocharger problems.
5. Consult the Manual: Detailed diagnostic and repair instructions for turbocharger issues are included in our manual.

EGR (Exhaust Gas Recirculation) valve faults can lead to performance issues. Here’s how to fix them:

1. Inspect for Carbon Build-Up: Check the EGR valve and its passages for carbon deposits or blockages.
2. Clean the Valve: Use an appropriate cleaner to remove carbon build-up from the valve.
3. Test Valve Operation: Ensure the EGR valve opens and closes properly during engine operation.
4. Replace if Necessary: If cleaning does not resolve the issue, replace the EGR valve.
5. Refer to the Manual: Our manual includes comprehensive procedures for diagnosing and repairing EGR valve faults.

Limp-home mode restricts vehicle performance to prevent damage. To address this issue:

1. Read Error Codes: Use an OBD-II scanner to retrieve error codes from the ECU.
2. Inspect Sensors and Wiring: Check for faults or damage in relevant sensors and wiring.
3. Reset the ECU: Sometimes resetting the ECU can clear limp-home mode and restore normal operation.
4. Check Fluid Levels: Ensure that all essential fluids, such as oil and coolant, are at the correct levels.
5. Consult the Manual: Our manual provides detailed troubleshooting steps for limp-home mode activation.

Electrical problems can be tricky but manageable. Here’s how to handle them:

1. Check Fuses and Relays: Inspect and replace any blown fuses or faulty relays.
2. Examine Wiring: Look for damaged or loose wiring connections throughout the vehicle.
3. Test Electrical Components: Ensure that all electrical components, such as lights and windows, are functioning correctly.
4. Inspect the Battery: Verify that the battery and alternator are in good condition.
5. Consult the Manual: Our manual offers detailed diagnostics and solutions for various electrical issues.