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 MANUALSFORD2021EXPEDITION PLATINUM, RWDREPAIR AND DIAGNOSISGENERAL INFORMATIONDTC INDEXDTC INDEX (ACCELERATION CONTROL - EXTERIOR LIGHTING SYSTEM)ANTI-THEFT SYSTEM DTCSPASSIVE ANTI-THEFT SYSTEM (PATS), WITH KEYLESS ENTRY AND PUSH BUTTON STARTPCM
2021 Ford Expedition Platinum, RWD
Passive Anti-Theft System (PATS), With Keyless Entry And Push Button Start: Pcm
2021 Ford Expedition Platinum, RWDSECTION Pcm
| DTC | Description | Action |
|---|---|---|
| P161A | Incorrect Response from Immobilizer Control Module | The BCM ID received by the PCM does not match the ID stored in the PCM memory. PERFORM a module initialization. Refer to: Anti-Theft Key Programming - Scan Tool . |
| All other Diagnostic Trouble Codes (DTCs) | - | Refer to the PCM DTC Chart in ELECTRONIC ENGINE CONTROLS - 3.5L ECOBOOST (272KW/370PS) . |
RENDER: 1.0x
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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.