B2507: Right High Beam Circuit Malfunction
Diagnostic trouble code B2507 indicates that the Body Control Module (BCM) or Smart Junction Box (SJB) has detected a fault in the right front high beam circuit. This can be caused by an open circuit, a short to ground, or a short to battery voltage in the wiring or components of the right high beam system.
1. Commonly Affected Makes
2. Most Common Causes
- Blown or incorrect right high beam bulb
- Open, shorted to ground, or shorted to battery in the right high beam wiring
- Loose, corroded, or damaged connector at the right headlamp
- Blown fuse for the right high beam circuit
3. Symptoms You Will Notice
- Right high beam inoperative
- Warning light on the dashboard (e.g., check engine or headlight indicator)
4. Step-by-Step Diagnosis
Check the right high beam bulb for continuity and correct type
Inspect the right high beam fuse and replace if blown
Examine the wiring and connector at the right headlamp for damage, corrosion, or loose pins
Test the circuit for open, short to ground, or short to battery using a multimeter
If all else is okay, suspect a faulty BCM/SJB and perform further diagnosis
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive with code B2507, but you will lack the right high beam, which reduces nighttime visibility. Have it repaired soon.
How much does it cost to fix?▼
Repair costs typically range from $50 to $200 for a bulb or fuse, up to $500–$1000 if the BCM/SJB needs replacement.