P0168 — Engine Fuel Temperature Too High
| Meaning | The engine computer has detected that the temperature of the fuel in the delivery system is higher than normal. This usually happens when the fuel absorbs excessive heat from the engine bay or the return fuel system overworks. |
| Family | Powertrain (P) |
Typical symptoms
Engine might be harder to start when it is already warm
Check Engine light is illuminated on the dashboard
Common causes
Faulty fuel temperature sensor giving an incorrect reading
Restricted fuel return line causing fuel to stay too long near the hot engine
Issues with the vehicle's cooling system raising overall underhood temperatures
What to do
Frequently asked questions
What does code P0168 mean?
Engine Fuel Temperature Too High. The engine computer has detected that the temperature of the fuel in the delivery system is higher than normal. This usually happens when the fuel absorbs excessive heat from the engine bay or the return fuel system overworks.
Can I keep driving with code P0168 active?
With caution: limp mode possible, have it checked soon
Common causes — P0168
Soaked heat from the engine bay affecting fuel lines or the rail Faulty fuel temperature sensor giving an incorrect reading Restricted fuel return line causing fuel to stay too long near the hot engine Issues with the vehicle's cooling system raising overall underhood temperatures
How do you fix code P0168?
Check the fuel temperature sensor and its wiring connector first for any obvious damage or loose pins. It is best to have this checked during your next routine service, but avoid driving in extreme heat if the engine shows performance issues.
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