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)CRUISE CONTROL SYSTEM DTCSNON-ADAPTIVEPCM
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WD
Cruise Control System DTCS: Non-Adaptive: Pcm
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WDSECTION Pcm
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| P0504 | Brake Switch A / B Correlation | GO to Pinpoint Test C |
| P0572 | Brake Switch A Circuit Low | GO to Pinpoint Test C |
| P0573 | Brake Switch A Circuit High | GO to Pinpoint Test C |
| P1703 | Brake Switch Out Of Self-Test Range | GO to Pinpoint Test C |
| P1935 | Brake Switch/Sensor Signal | GO to Pinpoint Test C |
| All other Diagnostic Trouble Codes (DTCs) | - | For 6.2L, REFER to: Electronic Engine Controls - 6.2L V8. For 6.8L, REFER to: Electronic Engine Controls - 6.8L Triton-30V - V10. For 6.7L Diesel, REFER to: Electronic Engine Controls - 6.7L Power Stroke Diesel. |
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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.