B1481Lighting
Rear Left Turn Signal Circuit
B1481 indicates a fault in the rear left turn signal lamp circuit. The body module detects an open or shorted bulb or wiring for that lamp.
🚗 Yes, but a non-working turn signal is a safety and legal concern.
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🎯 Top Causes, Ranked by Likelihood
#1Burned-out turn signal bulb$5-$30
A blown bulb opens the circuit and sets the code.
#2Corroded socket or connector$0-$60
A corroded rear socket loses contact, common with moisture.
#3Wiring fault to the lamp$50-$200
A broken or shorted wire disrupts the circuit.
🩺 Common Symptoms
- Rear left turn signal not working
- Hyperflash on that side
- Bulb-out warning
- Lighting code stored
💰 Repair Cost: DIY vs Shop
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🔧 How to Diagnose B1481
1Replace the rear left turn signal bulb
2Inspect the socket for corrosion
3Check wiring and ground for the lamp
4Repair wiring if the bulb and socket are good
❓ Frequently Asked Questions
Can I drive with B1481?
Yes, but a dead turn signal is a safety and legal issue, so fix it soon.
Why does my signal flash fast with B1481?
A burned-out bulb lowers circuit load and causes the hyperflash.
What causes B1481?
Usually a blown bulb, sometimes a corroded rear socket or wiring.
🔗 Related Codes
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