@bfrosh2027: This infographic provides a diagnostic guide for fuel level sensors, explaining how open circuits and short circuits affect the fuel gauge reading based on changes in electrical resistance. 📊 Circuit Behavior Comparison Condition Circuit Status Resistance Range Gauge Behavior Common Causes Normal Intact / Working 5 – 260 Ω Displays accurate level Float moves with fuel level Open Circuit Wire broken or loose Infinite (OL) Stuck on EMPTY (E) Corrupted connector, cut wire, faulty sender Short Circuit Signal wire grounded 0 – 2 Ω Stuck on FULL (F) Damaged insulation touching the chassis 🔍 Quick Diagnostic Rules • Stuck on Empty? Look for an open circuit (broken connection or unplugged harness). • Stuck on Full? Look for a short circuit (a stripped wire pinched against metal/ground). If you are currently troubleshooting a vehicle issue, let me know: • What symptoms is your fuel gauge showing? • What year, make, and model is the vehicle? • Do you have a multimeter handy to test resistance? I can guide you step-by-step through testing the circuit!

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Monday 05 October 2026 19:43:38 GMT