GPS Antenna Connection Open or Short
Your vehicle's GPS antenna connection is broken or shorted out, like an unplugged phone charger that won't deliver power. The navigation and location-based systems can't communicate with the satellite receiver.
The body control module monitors the GPS antenna circuit for proper voltage and continuity. It checks for open circuits (no connection) or short circuits (unexpected current draw) on the antenna feed line. If voltage drops below or rises above expected thresholds, the fault is triggered.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Antenna Circuit Voltage | 5V nominal with stable current draw | <0.5V (open) or >12V short condition |
| Circuit Continuity | Continuous signal to antenna | Open line or short to ground/power detected |
Code B2204 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, B2204 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.