Connect an OBD-II diagnostic scanner to retrieve and document diagnostic trouble codes (DTCs) from the vehicle's powertrain control module and other onboard systems.

Warnings

Tools required

Preparation

1. Park vehicle on level surface and engage parking brake
2. Ensure engine is off and key is removed from ignition
3. Locate OBD-II diagnostic port under driver's side dashboard, left of steering column above brake pedal area
4. Ensure scan tool is updated with latest software for 2011-2014 Ford vehicle coverage

Procedure

1. 1

   Access OBD-II Port
   Using a flashlight if needed, locate the 16-pin OBD-II diagnostic port under the driver's side dashboard. It is positioned above and to the left of the brake pedal, behind a small plastic cover or exposed. Remove any cover if present by gently pulling downward.
2. 2

   Connect Diagnostic Scanner
   With ignition in the OFF position, firmly insert the OBD-II scanner connector into the diagnostic port until it clicks and seats completely. Ensure the connection is secure and the connector is fully engaged with all pins contacting.
3. 3

   Power On Vehicle Systems
   Turn the ignition key to the ON/RUN position without starting the engine. This powers the vehicle's electronic control modules. Wait 5-10 seconds for the scanner to establish communication with the vehicle. Dashboard warning lights should illuminate normally.
   ℹ️Do not start the engine unless performing active tests or monitoring live data
4. 4

   Initialize Scanner Communication
   Power on the diagnostic scanner if it doesn't auto-power from the port. Select the vehicle make (Ford), year (2011-2014), model (F-150), and engine type (3.5L V6 EcoBoost) when prompted. Allow the scanner to establish communication protocols with all available control modules.
5. 5

   Retrieve Diagnostic Trouble Codes
   Navigate to the 'Read Codes' or 'Scan for DTCs' function on the scanner menu. Select 'Powertrain' or 'All Systems' to scan engine, transmission, ABS, airbag, and other control modules. Wait for the scan to complete, which typically takes 30-90 seconds depending on scanner type.
6. 6

   Document All Trouble Codes
   Record all DTCs displayed, including the code number (P0XXX, B0XXX, C0XXX, U0XXX format), code description, and which module reported each code. Note whether codes are current/active or pending/history. Pay special attention to any codes related to turbocharger, direct injection, or variable valve timing systems specific to the EcoBoost engine.
7. 7

   Capture Freeze Frame Data
   For each active DTC, access and record freeze frame data which shows engine operating conditions (RPM, speed, coolant temp, fuel trim, load) at the moment the code was set. This data is critical for accurate diagnosis of intermittent issues.
   ℹ️Freeze frame data will be erased if codes are cleared, so document completely before proceeding
8. 8

   Review Live Data (Optional)
   If diagnosing an active concern, access live data stream to monitor sensor values in real-time. For the 3.5L EcoBoost, key parameters include both turbocharger boost pressures, oxygen sensor voltages, fuel rail pressure (should be 1800-2200 PSI at idle), and timing advance values.
9. 9

   Perform System Tests (If Applicable)
   Use scanner bidirectional controls if available and needed for diagnosis. Tests may include commanding fuel pump on/off, cycling EVAP purge valve, or activating cooling fans. Only perform tests relevant to the diagnostic concern and follow scanner prompts carefully.
   ⚠Do not perform active tests with engine running unless specifically instructed, as some commands may cause unexpected vehicle behavior
10. 10

    Disconnect Scanner
    Turn ignition to OFF position. Remove the diagnostic scanner by pressing any release tabs and pulling the connector straight out from the OBD-II port. Reinstall any protective cover over the diagnostic port if one was present.

Reassembly

1. Replace any dashboard trim or covers removed to access OBD-II port
2. Store all documented codes and freeze frame data with vehicle service records

Verification

• Verify all DTCs and freeze frame data have been properly documented before proceeding with repairs
• Confirm scanner communication was successful with all relevant control modules (PCM, TCM, ABS, etc.)
• If codes were cleared for testing, perform a drive cycle matching freeze frame conditions to verify repair before returning vehicle to service

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