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 MANUALSFORD2021TRANSIT-350 HD BASE, VAN CARGO EXTENDED, 3.5L ENG VIN 8, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESELECTRONIC ENGINE CONTROLS - 3.5L DURATEC (202KW/275PS)
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWD
Electronic Engine Controls - 3.5L DURATEC (202KW/275PS)
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWDSECTION Electronic Engine Controls - 3.5L DURATEC (202KW/275PS)
- Description And Operation
- Diagnosis And Testing
- Electronic Engine Controls
- DTC Chart(s)
- Pinpoint Tests
- Pinpoint Test A: U0104
- Pinpoint Test B: U0121
- Pinpoint Test C: U0126, U0212
- Pinpoint Test D: U0164
- Pinpoint Test E: U023A
- Pinpoint Test F: U0252
- Pinpoint Test G: U0256
- Pinpoint Test H: U0405
- Pinpoint Test I: Fuel Pump Control Faults
- Pinpoint Test J: Oil Pressure Control Solenoid Faults
- Pinpoint Test K: P1001
- Pinpoint Test L: P166A
- Electronic Engine Controls
- Removal And Installation
- Camshaft Position (CMP) Sensor
- Catalyst Monitor Sensor
- Crankshaft Position (CKP) Sensor
- Cylinder Head Temperature (CHT) Sensor
- Engine Oil Pressure (EOP) Sensor
- Fuel Rail Pressure (FRP) Sensor
- Fuel Rail Pressure and Temperature Sensor
- Heated Oxygen Sensor (HO2S)
- Knock Sensor (KS)
- Manifold Absolute Pressure (MAP) Sensor
- Oil Pressure Control Solenoid
- Powertrain Control Module (PCM)
- Variable Camshaft Timing (VCT) Oil Control Solenoid
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.