No Communication to TV Module (No Fitting of TV)
The engine control unit cannot communicate with the TV (Television/Display) module, like a phone that can't connect to its Bluetooth speaker. This is a network communication failure between the main computer and the dashboard display system.
The ECU continuously attempts to establish a CAN bus or serial communication link with the TV module at regular intervals. It monitors for acknowledgment signals and response frames from the display module. If no valid communication packets are received within a timeout period (typically 100-500ms), the fault is triggered.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| TV Module Response Time | < 100ms | > 500ms or no response |
| CAN Bus Signal Level | Valid voltage differential (0.5-4.5V) | No signal or shorted bus |
Code B2200 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, B2200 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.