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-450 SUPER DUTY LARIAT, 4D PICKUP CREW CAB, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXDTC INDEX (ANTI LOCK BRAKE - ENGINE COOLING SYSTEM)ENGINE COOLING DTCS6.2L V8
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WD
6.2L V8
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WDSECTION 6.2L V8
WARNING:
Before beginning any service procedure in this article, refer to Engine Cooling System Health and Safety Precautions
. Failure to follow this instruction may result in serious personal injury.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| P0125 | Insufficient Coolant Temp For Closed Loop Fuel Control | GO to Pinpoint Test C |
| P0128 | Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature) | GO to Pinpoint Test C |
| P0217 | Engine Coolant Overtemperature Condition | GO to Pinpoint Test B |
| P0480 | Fan 1 Control Circuit | Refer to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) . |
| P0481 | Fan 2 Control Circuit | Refer to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) . |
| P1285 | Cylinder Head Overtemperature Condition | GO to Pinpoint Test B |
| P1299 | Cylinder Head Overtemperature Protection Active | GO to Pinpoint Test B |
| All Other PCM Diagnostic Trouble Codes (DTCs) | - | REFER to: Electronic Engine Controls . |
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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.