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 (MODULE COMMUNICATIONS - WIPER & WASHER SYSTEM)SEAT SYSTEM DTCSDSM
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WD
Seat System DTCS: DSM
2018 Ford F-450 Super Duty Lariat, 4D Pickup Crew Cab, 4WDSECTION DSM
DTC INDEX
| DTC | Description | Action |
|---|---|---|
| B1317 | Battery Voltage High | GO to Pinpoint Test K |
| B1318 | Battery Voltage Low | GO to Pinpoint Test L |
| B1663 | Seat Driver Front Up/Down Motor Stalled | If the motor does not operate, GO to Pinpoint Test E . If the motor operates in one second intervals, GO to Pinpoint Test F |
| B1664 | Seat Driver Rear Up/Down Motor Stalled | If the motor does not operate, GO to Pinpoint Test E . If the motor operates in one second intervals, GO to Pinpoint Test F |
| B1665 | Seat Driver Forward/Backward Motor Stalled | If the motor does not operate, GO to Pinpoint Test E . If the motor operates in one second intervals, GO to Pinpoint Test F |
| B1666 | Seat Driver Recline Motor Stalled | If the motor does not operate, GO to Pinpoint Test E . If the motor operates in one second intervals, GO to Pinpoint Test F |
| B1703 | Seat Driver Recline Forward Switch Circuit Short To Battery | GO to Pinpoint Test E |
| B1707 | Seat Driver Recline Rearward Switch Circuit Short To Battery | GO to Pinpoint Test E |
| B1711 | Seat Driver Front Up Switch Circuit Short To Battery | GO to Pinpoint Test E |
| B1715 | Seat Driver Front Down Switch Circuit Short To Battery | GO to Pinpoint Test E |
| B1719 | Seat Driver Forward Switch Circuit Short To Battery | GO to Pinpoint Test E |
| B1723 | Seat Driver Rearward Switch Circuit Short To Battery | GO to Pinpoint Test E |
| B1727 | Seat Driver Rear Up Switch Circuit Short To Battery | GO to Pinpoint Test E |
| B1731 | Seat Driver Rear Down Switch Circuit Short To Battery | GO to Pinpoint Test E |
| B1952 | Seat Rear Up/Down Position Feedback Circuit Short To Battery | GO to Pinpoint Test F |
| B1953 | Seat Rear Up/Down Position Feedback Circuit Short To Ground | GO to Pinpoint Test F |
| B1956 | Seat Front Up/Down Position Feedback Circuit Short To Battery | GO to Pinpoint Test F |
| B1957 | Seat Front Up/Down Position Feedback Circuit Short To Ground | GO to Pinpoint Test F |
| B1960 | Seat Recline Forward/Backward Position Feedback Circuit Short To Battery | GO to Pinpoint Test F |
| B1961 | Seat Recline Forward/Backward Position Feedback Circuit Short To Ground | GO to Pinpoint Test F |
| B1964 | Seat Horizontal Forward/Rearward Position Feedback Circuit Short To Battery | GO to Pinpoint Test F |
| B1965 | Seat Horizontal Forward/Rearward Position Feedback Circuit Short To Ground | GO to Pinpoint Test F |
| B1987 | Pedal Forward/Rearward Motor Stalled | REFER to: Hydraulic Brake Actuation . |
| B1988 | Pedal Position Forward Switch Circuit Short to Battery | REFER to: Hydraulic Brake Actuation . |
| B1989 | Pedal Position Rearward Switch Circuit Short to Battery | REFER to: Hydraulic Brake Actuation . |
| B1991 | Pedal Forward/Rearward Feedback Potentiometer Circuit Short to Battery | REFER to: Hydraulic Brake Actuation . |
| B2275 | Pedal Forward/Rearward Pot. Feedback Ckt. Short to GND | REFER to: Hydraulic Brake Actuation . |
| B2330 | Column Reach Feedback Potentiometer Circuit Short to Battery | REFER to: Steering Column . |
| B2331 | Column Reach Feedback Potentiometer Circuit Short to Ground | REFER to: Steering Column . |
| B2334 | Column Tilt Feedback Potentiometer Circuit Short to Battery | REFER to: Steering Column . |
| B2335 | Column Tilt Feedback Potentiometer Circuit Short to Ground | REFER to: Steering Column . |
| B2340 | Column Reach Motor Stalled | REFER to: Steering Column . |
| B2341 | Column Tilt Motor Stalled | REFER to: Steering Column . |
| B2477 | Module Configuration Failure |
NOTE:
This DTC indicates PMI has not been carried out on a newly installed module or configuration data has been lost. Presence of this DTC alone does not prevent basic seat operation from the seat control switch. Using a diagnostic scan tool, CARRY OUT PMI on the DSM. REPEAT the self-test and VERIFY successful PMI. CLEAR the Diagnostic Trouble Codes (DTCs). |
| U0140 | Lost Communication With Body Control Module (GEM) | GO to Pinpoint Test M |
| U2050 | No Application Present | INSTALL a new DSM. Refer to: Driver Front Seat Module (DSM) . |
RENDER: 1.0x
NO RELATED
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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.