Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 4 (ENGINE CONTROLS - DIAGNOSTIC METHODS (EXCEPT DIESEL & HYBRID))
2021 Ford Edge SE, 4WD
Section 4 (Engine Controls - Diagnostic Methods (Except Diesel & Hybrid))
2021 Ford Edge SE, 4WDSECTION Section 4 (Engine Controls - Diagnostic Methods (Except Diesel & Hybrid))
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2018 Lincoln Navigator, 2018 Lincoln MKZ, 2018 Lincoln MKX, 2018 Lincoln MKT, and 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
- Diagnostic Methods
- Diagnostic Tools
- Scan Tool Setup And Functionality
- Quick Test Description
- Clear The Continuous Diagnostic Trouble Codes (DTCs) And Reset The Emission Monitors Information In The Powertrain Control Module (PCM)
- Resetting The Keep Alive Memory (KAM)
- On Board System Readiness (OSR) Test
- Output State Control (OSC)
- Parameter Identification (PID)
- Freeze Frame Data
- Flash Electrically Erasable Programmable Read Only Memory (EEPROM)
- Diagnostic Monitoring Test Results Mode 6
- On Board Diagnostic (OBD) Drive Cycle
- Intermittent Diagnostic Techniques
- Adaptive Fuel Diagnostic Trouble Code (DTC) Diagnostic Techniques
- Notes
- Obtain Freeze Frame Data
- Using the LONGFT1 and LONGFT2 (Dual Bank Engines) PIDs
- Resetting Long Term Fuel Trims
- DTCs P0171 and P0174 System Too Lean Diagnostic Aids
- Air Measurement System
- Vacuum Leaks and Unmetered Air
- Insufficient Fueling
- Exhaust System Leaks
- DTCs P0172 and P0175 System Too Rich Diagnostic Aids
- Fuel System
- Intake Air System
- Base Engine
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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.