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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 282 (INTERIOR LIGHTING)DIAGNOSIS AND TESTINGINTERIOR LIGHTINGDIAGNOSTIC TROUBLE CODE (DTC) CHART
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWD
Diagnostic Trouble Code (DTC) Chart
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWDSECTION Diagnostic Trouble Code (DTC) Chart
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
Diagnostic Trouble Code Chart
| Module | DTC | Description | Action |
|---|---|---|---|
| BCM | B1175:01 | Driver Door Ajar Switch: General Electrical Failure | GO to Pinpoint Test A |
| BCM | B1175:01 | Driver Door Ajar Switch: General Electrical Failure | GO to Pinpoint Test C |
| BCM | B1176:01 | Passenger Door Ajar Switch: General Electrical Failure | GO to Pinpoint Test A |
| BCM | B1176:01 | Passenger Door Ajar Switch: General Electrical Failure | GO to Pinpoint Test C |
| BCM | B11C0:01 | Driver Side Rear Door Ajar Switch: General Electrical Failure | GO to Pinpoint Test A |
| BCM | B11C0:01 | Driver Side Rear Door Ajar Switch: General Electrical Failure | GO to Pinpoint Test C |
| BCM | B11C1:01 | Passenger Side Rear Door Ajar Switch: General Electrical Failure | GO to Pinpoint Test A |
| BCM | B11C1:01 | Passenger Side Rear Door Ajar Switch: General Electrical Failure | GO to Pinpoint Test C |
| BCM | B12C2:11 | Puddle Lamp: Circuit Short To Ground | GO to Pinpoint Test J |
| BCM | B12C2:15 | Puddle Lamp: Circuit Short To Battery or Open | GO to Pinpoint Test J |
| BCM | B1313:11 | Interior Lighting Output: Circuit Short To Ground | GO to Pinpoint Test B |
| BCM | B1313:15 | Interior Lighting Output: Circuit Short To Battery or Open | GO to Pinpoint Test B |
| BCM | B1313:15 | Interior Lighting Output: Circuit Short To Battery or Open | GO to Pinpoint Test D |
| BCM | B145C:11 | Ambient Lighting Power Supply Output: Circuit Short To Ground | GO to Pinpoint Test H |
| BCM | B145C:15 | Ambient Lighting Power Supply Output: Circuit Short To Battery or Open | GO to Pinpoint Test H |
| BCM | B1465:00 | Ambient Lighting Bus 1: No Sub Type Information | GO to Pinpoint Test H |
| BCM | B1465:00 | Ambient Lighting Bus 1: No Sub Type Information | GO to Pinpoint Test I |
| BCM | B1467:00 | Ambient Lighting Bus 3: No Sub Type Information | GO to Pinpoint Test H |
| BCM | B1467:00 | Ambient Lighting Bus 3: No Sub Type Information | GO to Pinpoint Test I |
| BCM | B14A7:11 | Puddle/Cargo Switch Input: Circuit Short To Ground | GO to Pinpoint Test J |
| BCM | B14AA:11 | Demand Lamp Output: Circuit Short To Ground | GO to Pinpoint Test E |
| BCM | B14AA:15 | Demand Lamp Output: Circuit Short To Battery or Open | GO to Pinpoint Test E |
| BCM | B14AA:15 | Demand Lamp Output: Circuit Short To Battery or Open | GO to Pinpoint Test F |
| BCM | B14D8:11 | Bed Lamp Output: Circuit Short To Ground | GO to Pinpoint Test J |
| BCM | B14D8:15 | Bed Lamp Output: Circuit Short To Battery or Open | GO to Pinpoint Test J |
| BCM | B153B:11 | Cargo Lamp Output: Circuit Short To Ground | GO to Pinpoint Test J |
| BCM | B153B:15 | Cargo Lamp Output: Circuit Short To Battery or Open | GO to Pinpoint Test J |
| DDM | B1165:11 | Left Front Puddle Lamp Output: Circuit Short To Ground | GO to Pinpoint Test G |
| DDM | B1165:15 | Left Front Puddle Lamp Output: Circuit Short To Battery Or Open | GO to Pinpoint Test G |
| PDM | B1166:11 | Right Front Puddle Lamp Output: Circuit Short To Ground | GO to Pinpoint Test G |
| PDM | B1166:15 | Right Front Puddle Lamp Output: Circuit Short To Battery Or Open | GO to Pinpoint Test G |
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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.