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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 879 (AUTOMATIC TRANSMISSION - 10-SPEED AUTOMATIC TRANSMISSION - 10R80 (DTC CHARTS 5.0L - ASSEMBLY))
2021 Ford Expedition Platinum, RWD
Section 879 (Automatic Transmission - 10-Speed Automatic Transmission - 10R80 (DTC Charts 5.0L - Assembly))
2021 Ford Expedition Platinum, RWDSECTION Section 879 (Automatic Transmission - 10-Speed Automatic Transmission - 10R80 (DTC Charts 5.0L - Assembly))
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Diagnosis And Testing
- DTC Chart and Pinpoint Tests - 5.0L 32V Ti-VCT
- Diagnostic Trouble Code (DTC) Chart
- Pinpoint Tests
- Pinpoint Test A: Shift Solenoids
- Pinpoint Test B: Transmission Fluid Temperature Sensor
- Pinpoint Test C: Transmission Range Sensor
- Pinpoint Test D: TSS, OSS, ISSA, ISSB Sensors (Electrical)
- Pinpoint Test E: Transmission Fluid Auxiliary Pump Circuit Diagnostics
- Pinpoint Test F: Transmission Fluid Auxiliary Pump Performance Diagnostics
- Pinpoint Test G: TCC, LPC Solenoids
- Pinpoint Test H: Park Lock Pawl Solenoid
- Pinpoint Test I: OSS, TSS, ISSA, ISSB Sensor (Performance)
- Pinpoint Test J: P0218, P1783
- Pinpoint Test K: P0702, P0882, P0883, P0884
- Pinpoint Test L: P0729
- Pinpoint Test M: P0731
- Pinpoint Test N: P0732
- Pinpoint Test O: P0733
- Pinpoint Test P: P0734
- Pinpoint Test Q: P0735
- Pinpoint Test R: P0736
- Pinpoint Test S: P0741, P0751, P0756, P0761, P0766, P0771, P1744, P2707
- Pinpoint Test T: P0752, P0757, P0762, P0767, P0772, P2708, P2758, P2783
- Pinpoint Test U: P076F
- Pinpoint Test V: P07D9
- Pinpoint Test W: P07F6
- Pinpoint Test X: DTC P07F7
- Pinpoint Test Y: P0868
- Pinpoint Test Z: P1636
- Pinpoint Test Aa: P163E, P163F
- Pinpoint Test Ab: P1705
- Pinpoint Test Ac: P1706
- Pinpoint Test Ad: P1711
- Pinpoint Test AE: P179D
- Pinpoint Test AF: P1A02
- Pinpoint Test Ag: P2700, P2701, P2702, P2703, P2704, 2705
- Pinpoint Test Ah: P27B2, P27B3, P27B4, P27B5, P27B6
- Diagnosis By Symptom
- Notes
- Global Customer Symptom Code (GCSC) Chart
- Pinpoint Tests
- Pinpoint Test A: No Engagement - Forward
- Pinpoint Test B: No Engagement - Reverse
- Pinpoint Test C: No Engagement - Both Forward And Reverse
- Pinpoint Test D: Engagement Quality - Forward
- Pinpoint Test E: Engagement Quality - Reverse
- Pinpoint Test F: Engagement Quality - Both Forward And Reverse
- Pinpoint Test G: Engagement Quality - Park
- Pinpoint Test H: Upshift Quality - Single Gear Affected
- Pinpoint Test I: Downshift Quality - Single Gear Affected
- Pinpoint Test J: Shift Quality - Multiple Gears Affected
- Pinpoint Test K: Torque Converter Clutch Operation
- Pinpoint Test L: Transmission Fluid Contaminated, Leaking, Overheating
- Pinpoint Test M: Noise, Vibration, Harshness
- Pinpoint Test N: Other Concerns
- Special Testing Procedures
- A Clutch
- B Clutch
- C Clutch
- D Clutch
- E Clutch
- F Clutch
- Low One-Way Clutch Assembly
- Torque Converter Clutch (TCC)
- DTC Chart and Pinpoint Tests - 5.0L 32V Ti-VCT
- General Procedures
- Removal And Installation
- E Clutch
- Intermediate Speed Sensor A (ISSA)
- Intermediate Speed Sensor B (ISSB)
- Main Control Valve Body
- Output Shaft Seal
- Output Shaft Speed (OSS) Sensor
- Park Lock Pawl Solenoid
- Selector Shaft Seal
- Shift Solenoids (SS)
- Torque Converter Seal
- Transmission - 2.7L EcoBoost (238kW 324PS)
- Transmission - 3.0L Power Stroke Diesel
- Transmission - 3.3L Duratec-V6
- Transmission - 3.5L EcoBoost (BM), Vehicles With: Transmission Fluid Heat Exchanger
- Transmission - 5.0L 32V Ti-VCT
- Transmission Control Module (TCM)
- Transmission Fluid Auxiliary Pump
- Transmission Fluid Pan, Gasket and Filter
- Transmission Fluid Pan, Gasket and Filter - 3.0L Power Stroke Diesel
- Transmission Fluid Pump
- Transmission Fluid Pump Idler Gear
- Transmission Fluid Temperature (TFT) Sensor
- Transmission Internal Wiring Harness
- Transmission Range (TR) Sensor
- Transmission Support Insulator
- Transmission Support Insulator - 3.0L Power Stroke Diesel
- Turbine Shaft Speed (TSS) Sensor
- Removal
- Overhaul
- Disassembly
- Assembly
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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.