Alternative Fuel Tank Temperature Sensor Circuit High

Common symptoms

What you'll notice

• Check the wiring and connections of the alternative fuel tank temperature sensor
• Inspect the alternative fuel tank temperature sensor for any signs of damage or malfunction
• Clean the alternative fuel tank temperature sensor to remove any dirt or debris that may be affecting its readings
• Replace the alternative fuel tank temperature sensor if all other checks indicate a faulty sensor.

Common causes

Most likely first

1. Faulty or malfunctioning alternative fuel tank temperature sensor
2. Wiring or connector issue with the alternative fuel tank temperature sensor
3. Issues with the fuel tank temperature sensor circuit, such as a short or open circuit
4. Problems with the engine control module (ECM) or related system components
5. Faulty or incorrect fuel type or fuel mixture in the alternative fuel tank

How to diagnose & fix

Work through it in order

1. Engine performance issues, such as decreased power and acceleration
2. Difficult starting or stalling of the engine
3. Increased fuel consumption
4. Check engine light illuminating on the dashboard
5. Rough idling or vibrations