When this code is triggered, it typically displays as a "Missing Message" or "Signal Failure" error in diagnostic tools like IIDTool or SDD. Common Symptoms message on the dashboard.

The alarm siren (often located behind the wheel arch liner or in the engine bay) has its own internal rechargeable battery. This ensures the alarm can sound even if the main vehicle battery is disconnected. Over time, these internal batteries leak or lose their ability to hold a charge, causing the siren to report a communication fault or "missing message" to the BCM. 2. Corroded Wiring or Ground Faults

: Check the fuse associated with the security system/siren in the passenger or engine compartment fuse box.

17 Dec 2025 — * None at all. Other than the first time, it used to indicate that the vehicle would shut down in 3 minutes. Auto Mechanic: Tom K. JustAnswer TECHNICAL BULLETIN - nhtsa