RF LAMP HIGH BEAM CIRCUIT Failure
The right front high beam headlight circuit is malfunctioning, meaning the car detected an electrical problem like an open circuit, short, or failed bulb. It's like a broken wire preventing power from reaching the light.
The ECU monitors voltage and current draw through the RF high beam circuit when the high beam switch is activated. If voltage is too high, current is too low, or the circuit remains open, a fault is detected. The module expects specific resistance and amperage within normal operating parameters.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Circuit Current Draw | 3-5 amps during high beam operation | Below 0.5 amps or open circuit detected |
| Circuit Voltage | 12-14 volts at module | 0 volts or excessive voltage spike |
Code B2507 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.
Once the fault is repaired, B2507 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.