Fuel Temperature Sensor Range/Performance Problem
The fuel temperature sensor readings are out of the expected range.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The fuel temperature sensor measures how hot the fuel is; if it thinks the fuel is too hot or too cold, it triggers a fault.
What the computer is actually seeing
The engine control module (ECM) expects the fuel temperature to be between -40°C to 140°C (-40°F to 284°F). If the reading is outside this range, it sets the code.
What a healthy reading looks like
Fuel temperature should be around 30°C to 80°C (86°F to 176°F) during normal 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. Check the wiring and connectors to the fuel temperature sensor for damage or corrosion. Fix as necessary.
- 22. With a multimeter, measure the resistance of the fuel temperature sensor; expect levels between 1500 ohms (at 0°C) to 250 ohms (at 100°C). If readings are out of range, replace the sensor.
- 33. Check the fuel system for contamination or routing issues that could cause excessive heat; inspect for fitting restrictions or clogged filters.
- 44. Verify the ECM has the latest software updates; consult the manufacturer if necessary.
Common causes
- Faulty fuel temperature sensor
- Damaged wiring or connectors
- Fuel contamination or excessive heat
- ECM software issue
- Poor fuel circulation
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's best to address it soon; it can affect fuel efficiency and other systems.
Will this code come back after I fix it?
If the repair is done correctly and the root cause is addressed, the code should clear without returning.
Why does this code pair with other codes sometimes?
Multiple codes can indicate related issues, like sensor failures or circuit problems that affect more than one component.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →