What Does B2204 Mean?
This code indicates that the Body Control Module (BCM) or infotainment system has detected an electrical fault in the GPS antenna circuit. The fault can be either an open circuit (broken wire, disconnected connector, or failed antenna) or a short circuit (wire touching ground or power). This prevents the navigation system from receiving GPS satellite signals, rendering location-based services inoperative.
Common Causes
40%
Damaged, corroded, or disconnected GPS antenna connector, often located on the roof or dashboard
30%
Failed GPS antenna unit due to water intrusion, physical damage, or internal component failure
20%
Broken, chafed, or pinched wiring harness between antenna and control module
10%
Faulty BCM or infotainment module with damaged GPS receiver circuit
Diagnostic Steps
1
Step 1: Perform visual inspection of GPS antenna location (typically roof-mounted or dashboard-mounted). Check for physical damage, water intrusion, loose mounting, or aftermarket accessories that may interfere with signal reception.
2
Step 2: Locate and inspect GPS antenna connector, usually accessible by removing headliner trim or dashboard panels. Check for corrosion, pushed-back pins, moisture contamination, or loose connection. Clean and reseat connector firmly.
3
Step 3: Using a digital multimeter, backprobe the antenna connector with ignition ON. Measure voltage supply (typically 3-5V or 12V depending on system) and verify ground circuit has less than 0.1 ohms resistance to chassis ground. Compare readings to manufacturer specifications.
4
Step 4: Disconnect GPS antenna and measure resistance across antenna terminals. Active GPS antennas typically show 10-100 ohms depending on design; open circuit (infinite resistance) or near-zero resistance indicates failed antenna. Passive antennas should show 50-75 ohms.
5
Step 5: Inspect wiring harness from antenna to module for damage, especially at routing points through pillars, door jambs, or under trim panels. Check for pinch points, cuts, or areas where harness may contact sharp edges or moving parts.
6
Step 6: If all wiring and antenna test normal, verify control module operation by checking for updated software/firmware available for the navigation or BCM system. Clear codes, reconnect all components, and verify repair by confirming GPS signal acquisition and no code return.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
This code indicates that the Body Control Module (BCM) or infotainment system has detected an electrical fault in the GPS antenna circuit. The fault can be either an open circuit (broken wire, disconnected connector, or failed antenna) or a short circuit (wire touching ground or power). This prevent...
The most common cause of B2204 (GPS Antenna Connection Open or Short) is: Damaged, corroded, or disconnected GPS antenna connector, often located on the roof or dashboard
Typical repair costs for B2204 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This code does not affect vehicle safety or drivability. The vehicle is safe to drive, but navigation, GPS-based features, and location services will be unavailable until repaired. No urgency unless these features are critical to the driver.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2204 to identify the root cause.
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Quick Info
Category
Body
System
Navigation and Infotainment System
Difficulty
Type
Generic (SAE)
Recommended Tools
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