Alternative Fuel Tank Temperature Sensor Range/Performance

Where it lives

For P01AB, the part to look at first is the sensor named here.

Check these first

• Tank temperature sensor reading outside the expected range
• A biased tank temperature sensor element
• Wiring or a connector fault at the tank temperature sensor
• Fuel level or tank condition affecting the reading
• An ECM fault at the alternative fuel tank sensor input

What to do next

1. Read the alternative fuel tank temperature live data
2. Inspect the tank temperature sensor connector and wiring
3. Test the sensor circuit for opens and shorts
4. Compare the reading to a known tank temperature
5. Replace the tank temperature sensor if it reads off
6. Clear the code and retest

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