Audio Reverse Aid Mute Input Ckt Failure
The vehicle's audio system can't receive the signal to mute the reverse aid sound when needed, like a phone that won't silence when you tell it to. This is a wiring or connection problem between the reverse aid system and the audio mute circuit.
The ECU monitors the input signal voltage from the reverse aid mute control circuit. It expects a valid high or low signal state when the vehicle is in reverse. A missing, shorted, or open circuit prevents proper signal detection.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Mute Input Signal | Valid logic state (5V or 0V) | Floating, open, or short circuit condition |
| Circuit Continuity | < 5 ohms resistance | > 10 ohms resistance or open |
Code B2384 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, B2384 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.