B2550
Lamp Dome Output Circuit Short To Ground
B2550 is an OBD-II diagnostic trouble code meaning: Lamp Dome Output Circuit Short To Ground. Common causes: shorting wires to ground, wiring harness damage. Estimated repair cost: $17–56.
Symptoms
- Dome light not working
- Interior lamps always on
- Interior light flashing
Causes
- Shorting wires to ground
- Wiring harness damage
- Malfunction of the lighting control unit
- Short circuit in door switches
- Contact corrosion
How to Fix
- Visual inspection of the wiring harness in the dome area
- Checking circuit resistance to ground
- Diagnostics of door switches operation
- Checking the integrity of wires to the control unit
- Replacing damaged wiring sections
Related codes
FAQ
What does the B2550 code mean?
B2550 is an OBD-II diagnostic trouble code that indicates: Lamp Dome Output Circuit Short To Ground
What causes a B2550 error code?
The most common causes of B2550 include: Shorting wires to ground; Wiring harness damage; Malfunction of the lighting control unit; Short circuit in door switches.
How do I fix a B2550 diagnostic trouble code?
To fix B2550: Visual inspection of the wiring harness in the dome area. Checking circuit resistance to ground. Diagnostics of door switches operation. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B2550?
Yes, but get it checked soon
How much does it cost to fix B2550?
The estimated repair cost for B2550 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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