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.
2021 Ford Expedition XLT, 4WDFACTORY OEM SERVICE PROCEDURE
Powertrain Control Module (PCM) Input and Output Controls
| DTC | Description | Action |
|---|---|---|
| P0219:00 | Engine Overspeed Condition: No Sub Type Information | GO to Pinpoint Test Z |
| P0297:00 | Vehicle Overspeed Condition: No Sub Type Information | GO to Pinpoint Test Z |
| P0685:00 | ECM/PCM Power Relay Control Circuit/Open: No Sub Type Information | GO to Pinpoint Test B |
| P068A:00 | ECM/PCM Power Relay De-Energized - Too Early: No Sub Type Information | GO to Pinpoint Test B |
| P06A6:00 | Sensor Reference Voltage A Circuit Range/Performance: No Sub Type Information | GO to Pinpoint Test C |
| P06A7:00 | Sensor Reference Voltage B Circuit Range/Performance: No Sub Type Information | GO to Pinpoint Test C |
| P06A8:00 | Sensor Reference Voltage C Circuit Range/Performance: No Sub Type Information | GO to Pinpoint Test C |
| P06B8:00 | Internal Control Module Non-Volatile Random Access Memory (NVRAM) Error: No Sub Type Information | GO to Pinpoint Test B |
| P2610:00 | ECM/PCM Engine Off Timer Performance: No Sub Type Information | GO to Pinpoint Test QB |
Factory Service Tools
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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.
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