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)ANTI-THEFT SYSTEM (PERIMETER) DTCSBCM
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WD
Anti-Theft System (Perimeter) DTCS: BCM
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WDSECTION BCM
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| B109F:01 | Intrusion Sensor Module: General Electrical Failure | GO to Pinpoint Test B |
| B109F:02 | Intrusion Sensor Module: General Signal Failure | GO to Pinpoint Test B |
| B109F:08 | Intrusion Sensor Module: Bus Signal / Message Failure | GO to Pinpoint Test B |
| B109F:49 | Intrusion Sensor Module: Internal Electronic Failure | INSTALL a new intrusion sensor. REFER to: Intrusion Sensor . |
| B109F:55 | Intrusion Sensor Module: Not Configured | Using a diagnostic scan tool, CARRY OUT the LIN New Module Initialization procedure (Toolbox>Electrical>Service Functions>LIN New Module Initialization). |
| B109F:97 | Intrusion Sensor Module: Component or System Operation Obstructed or Blocked | GO to Pinpoint Test B |
| B109F:9A | Intrusion Sensor Module: Component or System Operating Conditions | GO to Pinpoint Test B |
| B1305:01 | Hood Switch: General Electrical Failure | GO to Pinpoint Test D |
| All other Diagnostic Trouble Codes (DTCs) | - | REFER to: Body Control Module (BCM) . |
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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.