FTS (Fuel Temperature Sensor) Above Normal
The fuel temperature reading is above the acceptable limit.
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What it means (plain English)
The fuel temperature sensor is measuring fuel temperature above its normal range, which may indicate overheating fuel, often due to engine issues or failing components.
What the computer is actually seeing
The Engine Control Module (ECM) receives a fuel temperature signal that is higher than the normal operating range, typically over 85°C (185°F).
What a healthy reading looks like
Fuel temperature should be between 30°C (86°F) and 70°C (158°F) during regular operation.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connector to the fuel temperature sensor for damage, corrosion, or loose connections. Decision: If found damaged, repair or replace the wiring/connector. If not, proceed to step 2.
- 22. Check the fuel temperature with a scan tool or multimeter. Compare reading to expected values. Decision: If the reading is above 70°C (158°F), assess the fuel pump operation. If within range, explore sensor replacement.
- 33. Test the fuel pump for proper operation and overheating. Decision: If the pump is overheating, replace it. If normal, replace the fuel temperature sensor.
Common causes
- Faulty fuel temperature sensor.
- Wiring issue between the sensor and ECM.
- Fuel pump overheating or malfunction.
- Fuel system contamination leading to improper cooling.
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but monitor performance closely. Prolonged exposure to high fuel temperatures can cause damage over time.
Will this code come back after resetting?
If the underlying issue isn't resolved, it likely will return.
Why does this code appear with other codes?
This code may accompany others if multiple fuel system issues exist, possibly linked to similar sensors or components.
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