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 MANUALSFORD2018F-150 XLT, 4D PICKUP EXTRA CAB, 3.5L ENG VIN G, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXDTC INDEX - (ANTI LOCK BRAKE SYSTEM - ELECTRONIC ENGINE CONTROLS)AUTOMATIC TRANSMISSION EXTERNAL CONTROLS DTCSPCM
2018 Ford F-150 XLT, 4D Pickup Extra Cab, 3.5L Eng VIN G, RWD
Automatic Transmission External Controls DTCS: Pcm
2018 Ford F-150 XLT, 4D Pickup Extra Cab, 3.5L Eng VIN G, RWDSECTION Pcm
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| P0815 | Upshift Switch Circuit | For the 6R80 transmission, PINPOINT TEST B For the 10R80 transmission, PINPOINT TEST F |
| P0816 | Downshift Switch Circuit | For the 6R80 transmission, PINPOINT TEST B For the 10R80 transmission, PINPOINT TEST F |
| P0826 | Up and Down Switch Circuit | For the 6R80 transmission, PINPOINT TEST B For the 10R80 transmission, PINPOINT TEST F |
| P1780 | Transmission Control Switch (O/D Cancel) Circuit Out of Self-Test Range | For the 6R80 transmission, PINPOINT TEST C For the 10R80 transmission, PINPOINT TEST G |
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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.