Engine Fuel Temperature Sensor 2
Indicates a problem with the second fuel temperature sensor.
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)
Your engine has two sensors for fuel temperature; this code means the second one isn't working right.
What the computer is actually seeing
The Engine Control Module (ECM) expects the fuel temperature reading from Sensor 2 to be within a range but is getting an unusual signal, usually below -40°C (-40°F) or above 125°C (257°F).
What a healthy reading looks like
Fuel temperature readings should be between 0°C (32°F) and 100°C (212°F).
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 connector for Sensor 2. Look for damaged wires or corrosion. If found, repair or replace them.
- 22. Test the resistance of the fuel temperature sensor while it’s at room temperature. It should read approximately 2.5 kΩ at 25°C (77°F). If it's out of range, replace the sensor.
- 33. Use a scan tool to monitor the fuel temperature readings. If the reading is stuck at -40°C (-40°F) or above 125°C (257°F), it confirms a sensor issue.
- 44. Inspect the ground connection for the sensor. Ensure it is clean and secure. Repair any issues found.
- 55. If all else checks out, verify the ECM functionality; it might require reprogramming or replacement.
Common causes
- Faulty Fuel Temperature Sensor 2
- Wiring issues or open circuits
- Bad Ground connection
- Corroded connectors
- Faulty ECM
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
While it's drivable, you may experience decreased fuel efficiency or performance issues.
Will this issue come back after repair?
If the sensor or wiring is properly fixed, it shouldn’t come back unless there’s another underlying issue.
Why does this code pair with others?
Intermittent failures can trigger multiple codes related to fuel system components.
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