Fuel Level Sensor Fault
Fuel level sensor is out of range or not functioning properly.
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 level sensor measures how much fuel is in the tank. If it's faulty, it might send a signal indicating the fuel level is wrong or that there's a malfunction.
What the computer is actually seeing
The engine control module (ECM) expects the fuel level sensor to provide a voltage between 0.5V (empty) and 4.5V (full). Values outside this range indicate a malfunction.
What a healthy reading looks like
0.5V to 4.5V for normal operation; anything below 0.5V or above 4.5V is a fault.
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.
- 1Check the fuel level in the tank. If it's really low, fill it up and see if the code returns.
- 2Inspect the wiring harness and connectors for damage or corrosion. Repair as necessary.
- 3Measure the voltage at the fuel level sensor. It should be between 0.5V and 4.5V. If not, the sensor is likely faulty.
- 4If the sensor is within range, check the vehicle's ground connections related to the ECM.
Common causes
- Faulty fuel level sensor
- Wiring issues or shorts
- ECM software glitch
- Grounding issues at connector
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It is generally safe, but you might not know how much fuel you have, so fill up regularly.
Will this code come back after clearing it?
If the underlying issue isn't fixed, yes, the code will likely reappear.
Why does this code pair with SPN 1754?
SPN 1754 usually indicates a fuel sender range error, commonly linked to similar sensor issues.
Working a real vehicle right now?
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