diff --git a/packages/modules/vehicles/json/soc.py b/packages/modules/vehicles/json/soc.py
index d988c862ce..95ababf601 100644
--- a/packages/modules/vehicles/json/soc.py
+++ b/packages/modules/vehicles/json/soc.py
@@ -31,7 +31,7 @@ def extract_to_epoch(input_string: str) -> float:
         return None
 
 
-def parse_data(data: Dict[str, Any], pattern: str) -> float:
+def parse_data(data: Dict[str, Any], pattern: str) -> any:
     log.debug(f"parse_data: data='{data}' pattern='{pattern}'")
 
     if pattern == "":
@@ -42,7 +42,7 @@ def parse_data(data: Dict[str, Any], pattern: str) -> float:
         raise ValueError(f"Pattern {pattern} hat keine Ergebnisse in '{data}' geliefert.")
 
     log.debug(f"result='{result}'")
-    return float(result)
+    return result
 
 
 def fetch_soc(config: JsonSocSetup) -> CarState:
@@ -53,12 +53,11 @@ def fetch_soc(config: JsonSocSetup) -> CarState:
     timeout = config.configuration.timeout if isinstance(config.configuration.timeout, int) else None
 
     if url is None or url == "":
-        log.warning("URL nicht definiert, setze SOC auf 0")
-        return CarState(0, 0)
-    else:
-        raw_data: Dict[str, Any] = req.get_http_session().get(url, timeout=timeout).json()
+        raise ValueError("Keine URL zum Abrufen der Daten definiert. Bitte in der Konfiguration aktualisieren.")
+
+    raw_data: Dict[str, Any] = req.get_http_session().get(url, timeout=timeout).json()
 
-    soc = parse_data(raw_data, soc_pattern)
+    soc = float(parse_data(raw_data, soc_pattern))
 
     if range_pattern is None or range_pattern == "":
         log.debug("Kein Pattern für Range angegeben, setze Range auf None.")
diff --git a/packages/modules/vehicles/json/test_soc.py b/packages/modules/vehicles/json/test_soc.py
new file mode 100644
index 0000000000..4f8ea1c0af
--- /dev/null
+++ b/packages/modules/vehicles/json/test_soc.py
@@ -0,0 +1,72 @@
+import unittest
+from unittest.mock import patch, MagicMock
+from soc import fetch_soc, JsonSocSetup, JsonSocConfiguration
+
+
+class TestSoc(unittest.TestCase):
+
+    def setUp(self):
+        self.test_cases = [
+            {
+                'sample_data': {
+                    'energy': [{
+                        'updated_at': '2025-01-04 10:00:13+00:00',
+                        'autonomy': 214.0,
+                        'battery': None,
+                        'charging': {
+                            'charging_mode': 'No',
+                            'charging_rate': 0,
+                            'next_delayed_time': 'PT9H1M',
+                            'plugged': True,
+                            'remaining_time': 'PT0S',
+                            'status': 'Disconnected'
+                        },
+                        'consumption': None,
+                        'level': 69.0,
+                        'residual': None,
+                        'type': 'Electric'
+                    }]
+                },
+                'url': "http://example.com/soc1",
+                'soc_pattern': '.energy[0].level',
+                'range_pattern': '.energy[0].autonomy',
+                'timestamp_pattern': '.energy[0].updated_at',
+                'expected_soc': 69,
+                'expected_range': 214,
+                'expected_timestamp': 1735984813
+            },
+            {
+                'sample_data': {
+                    "response": {
+                        "value": "20.2",
+                        "timestamp": 1736108141
+                    }
+                },
+                'url': "http://example.com/soc2",
+                'soc_pattern': '.response.value',
+                'range_pattern': None,
+                'timestamp_pattern': '.response.timestamp',
+                'expected_soc': 20.2,
+                'expected_range': None,
+                'expected_timestamp': 1736108141
+            }
+        ]
+
+    @patch('soc.req.get_http_session')
+    def test_fetch_soc(self, mock_get_http_session):
+        for case in self.test_cases:
+            mock_response = MagicMock()
+            mock_response.json.return_value = case['sample_data']
+            mock_get_http_session.return_value.get.return_value = mock_response
+
+            vehicle_config = JsonSocSetup(configuration=JsonSocConfiguration(
+                url=case['url'],
+                soc_pattern=case['soc_pattern'],
+                range_pattern=case['range_pattern'],
+                timestamp_pattern=case['timestamp_pattern']
+            ))
+            car_state = fetch_soc(vehicle_config)
+
+            self.assertEqual(car_state.soc, case['expected_soc'])
+            self.assertEqual(car_state.range, case['expected_range'])
+            self.assertEqual(car_state.soc_timestamp, case['expected_timestamp'])