B0050: Rear Body Right Turn Signal Circuit Malfunction
Can you still drive? Yes, but a non-functioning turn signal is a traffic safety hazard and a ticketable offense. Replace the bulb promptly.
What Does B0050 Mean?
Code B0050 indicates that the body control module has detected a fault in the right rear turn signal circuit. This could be an open circuit from a burned-out bulb, excessive resistance in the wiring, or a short to ground. The BCM monitors current draw to detect bulb failures and circuit problems.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Burned-out rear right turn signal bulb
- Corroded bulb socket
- Damaged wiring to right tail light assembly
- Faulty body control module
- Bad ground connection at tail light
Symptoms
- Right rear turn signal not flashing
- Fast blink rate on dashboard indicator
- Turn signal warning message on instrument cluster
- Right side marker light may also be affected
Diagnostic Steps
- 1Inspect the right rear turn signal bulb and replace if burned out
- 2Check bulb socket for corrosion or melting
- 3Test for power and ground at the tail light connector
- 4Inspect wiring from BCM to right rear tail light for damage
- 5Check ground connections near the right rear tail light
Recommended Parts & Tools
turn signal bulbs
bulb socket repair harness
electrical contact cleaner
wire repair kit
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $5 - $300 |
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Frequently Asked Questions
Why does my turn signal blink fast?
A fast blink rate usually means a bulb has burned out. The reduced current draw causes the flasher to cycle faster as a built-in warning.
Can a bad ground cause B0050?
Yes, a poor ground connection at the tail light housing is a common cause, especially on trucks where the ground wire is exposed to road salt and moisture.
Community Fix Reports
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