Common Symptoms
- Check Engine Light illuminated
- Poor fuel economy
- Hard starting when engine is hot
- Engine hesitation or stumble during acceleration
- Fuel gauge reading erratically
- Black smoke from exhaust under load
Most Likely Root Causes
- Faulty fuel temperature sensor
- Corroded or damaged wiring harness to fuel temperature sensor
- Poor electrical connection at fuel temperature sensor connector
- Fuel temperature sensor circuit short or open
- Failed fuel pump module or sender unit
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Component Location
The fuel temperature sensor is typically located in the fuel tank integrated with the fuel pump module or fuel level sender unit.
Manufacturer Notes
Some vehicles integrate the fuel temperature sensor with the fuel level sender requiring complete pump module replacement if sensor fails.
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