diff --git a/app.py b/app.py
index f6c0868..183305b 100644
--- a/app.py
+++ b/app.py
@@ -139,6 +139,15 @@ def trips():
 def gps_status():
     return jsonify(app_gps.get_status())
 
+@app.route('/api/obd/status')
+def obd_status():
+    return jsonify({
+        "adapter_present": bool(app_obd._find_obd_port()),
+        "port": app_obd._find_obd_port(),
+        "car_connected": app_obd._is_car_connected(),
+        "status_label": "Connected" if app_obd._is_car_connected() else "Disconnected",
+    })
+
 @app.route('/api/trip/<int:trip_id>')
 def trip_route(trip_id):
     trip = app_sql.get_trip_route(trip_id)
diff --git a/static/js/yaris.js b/static/js/yaris.js
index 8ef1a52..cfcb327 100644
--- a/static/js/yaris.js
+++ b/static/js/yaris.js
@@ -235,8 +235,8 @@ function renderGpsStatus(status) {
             badgeClass = stale ? 'text-bg-warning' : 'text-bg-success';
             detail = formatGpsAge(status.fix_age_seconds);
             // Show lat/lon from API response (not just socket events)
-            if (locX) locX.textContent = status.latitude != null ? status.latitude.toFixed(6) : '—';
-            if (locY) locY.textContent = status.longitude != null ? status.longitude.toFixed(6) : '—';
+            if (locX) locX.textContent = status.latitude != null ? Number(status.latitude).toFixed(6) : '—';
+            if (locY) locY.textContent = status.longitude != null ? Number(status.longitude).toFixed(6) : '—';
         } else {
             label = 'No fix';
             badgeClass = 'text-bg-warning';
@@ -305,3 +305,18 @@ window.setInterval(function () {
         if (fixDetail) fixDetail.textContent = error.message;
     });
 }, 15000);
+
+async function refreshObdStatus() {
+    try {
+        const resp = await fetch('/api/obd/status');
+        const status = await resp.json();
+        const el = document.getElementById('obd-status');
+        if (el) el.textContent = status.adapter_present
+            ? (status.car_connected ? 'Connected' : 'Adapter only')
+            : 'Not detected';
+    } catch (e) {
+        // Socket events will eventually update it
+    }
+}
+refreshObdStatus();
+window.setInterval(refreshObdStatus, 15000);