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 552 (AUTOMATIC TRANSMISSION - 10-SPEED AUTOMATIC TRANSMISSION - 10R80 (DIAGNOSIS & TESTING - GENERAL PROCEDURES))
2021 Ford Expedition Platinum, RWD
Section 552 (Automatic Transmission - 10-Speed Automatic Transmission - 10R80 (Diagnosis & Testing - General Procedures))
2021 Ford Expedition Platinum, RWDSECTION Section 552 (Automatic Transmission - 10-Speed Automatic Transmission - 10R80 (Diagnosis & Testing - General Procedures))
WARNING: This page is about a different car, the 2020 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 - 3.5L EcoBoost (272kW/370PS)
- 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 : DTCS P0C28, P0C29, P0C2A, P0C2C, P0C2D, P0C2E, P2796
- Pinpoint Test F : DTCS P0B0D, P0C27, P175A
- Pinpoint Test G : TCC, LPC Solenoids
- Pinpoint Test H : OSS, TSS, ISSA, ISSB Sensor (Performance)
- Pinpoint Test I : DTC P0218, P1783
- Pinpoint Test J : DTC P0702, P0882, P0883, P0884, P1397
- Pinpoint Test K : DTC P0729
- Pinpoint Test L : DTC P0731
- Pinpoint Test M : DTC P0732
- Pinpoint Test N : DTC P0733
- Pinpoint Test O : DTC P0734
- Pinpoint Test P : DTC P0735
- Pinpoint Test Q : DTC P0736
- Pinpoint Test R : DTC P0741, P0751, P0756, P0761, P0766, P0771, P1744, P2707
- Pinpoint Test S : DTC P0752, P0757, P0762, P0767, P0772, P2708, P2758, P2783
- Pinpoint Test T : DTC P076F
- Pinpoint Test U : DTC P07D9
- Pinpoint Test V : DTC P07F6
- Pinpoint Test W : DTC P07F7
- Pinpoint Test X : DTC P0868
- Pinpoint Test Y : DTC P1636, P163E, P163F
- Pinpoint Test Z : DTC P1711
- Pinpoint Test Aa : DTC P1A02
- Pinpoint Test Ab : DTC P2700, P2701, P2702, P2703, P2704, 2705
- Pinpoint Test Ac : DTC P27B2, P27B3, P27B4, P27B5, P27B6
- 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 : DTCS P0C28, P0C29, P0C2A, P0C2C, P0C2D, P0C2E, P2796
- Pinpoint Test F : DTCS P0B0D, P0C27, P175A
- Pinpoint Test G : TCC, LPC Solenoids
- Pinpoint Test H : OSS, TSS, ISSA, ISSB Sensor (Performance)
- Pinpoint Test I : DTC P0218, P1783
- Pinpoint Test J : DTC P0702, P0882, P0883, P0884, P1397
- Pinpoint Test K : DTC P0729
- Pinpoint Test L : DTC P0731
- Pinpoint Test M : DTC P0732
- Pinpoint Test N : DTC P0733
- Pinpoint Test O : DTC P0734
- Pinpoint Test P : DTC P0735
- Pinpoint Test Q : DTC P0736
- Pinpoint Test R : DTC P0741, P0751, P0756, P0761, P0766, P0771, P1744, P2707
- Pinpoint Test S : DTC P0752, P0757, P0762, P0767, P0772, P2708, P2758, P2783
- Pinpoint Test T : DTC P076F
- Pinpoint Test U : DTC P07D9
- Pinpoint Test V : DTC P07F6
- Pinpoint Test W : DTC P07F7
- Pinpoint Test X : DTC P0868
- Pinpoint Test Y : DTC P1636, P163E, P163F
- Pinpoint Test Z : DTC P1711
- Pinpoint Test Aa : DTC P1A02
- Pinpoint Test Ab : DTC P2700, P2701, P2702, P2703, P2704, 2705
- Pinpoint Test Ac : DTC 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 - 3.5L EcoBoost (272kW/370PS)
- General Procedures
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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.