Troubleshooting LED Trailer Taillight Error Code on 2021 Ford F-150
Updated 02/06/2025 | Published 02/04/2025
Question:
I have a utility trailer that i was having problems with the led tailights. 2021 F 150 with a trailer light and brake wiring fault on the dash. If i unplugged the taillights the fault codes goes away. Put standard tailights on it and the codes went away. Why did the leds trigger the fault code?
asked by: Rick M
Expert Reply:
Hey Rick, the problem is that the trailer taillights are somewhat connected to your truck's taillights and since LED taillights draw a fraction of the amperage as an incandescent it will make the truck think it has a bulb out. So what you can do in these situations is use the 7-way adapter part # 20142 and the error issues would go away.
Product Page this Question was Asked From
Trailer Connector Adapter w/ Lamp-Out Sensor Bypass - 7-Way RV to 7-Way RV - Vehicle End
- Custom Fit Vehicle Wiring
- Wiring Adapters
- Universal Fit
- 7 Blade to 7 Blade
- Plug Only
- Tow Ready
more information >
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Rick M.
2/6/2025
Thanks for your help.