Fuel Level Sensor – Signal Above Normal
Fuel level sensor signal is too high according to the engine control module.
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 system thinks your fuel tank is fuller than it actually is, which can cause wrong fuel level readings in the display.
What the computer is actually seeing
The fuel level sensor is sending a voltage signal above the normal range, generally above 4.5 volts, indicating a higher fuel level than expected.
What a healthy reading looks like
Normal voltage from the fuel level sensor should be between 0.5 to 4.5 volts, which corresponds to an empty to full tank.
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 wiring and connectors for damage or corrosion; repair as necessary.
- 2Measure the voltage at the fuel level sensor connector; it should be between 0.5 to 4.5 volts.
- 3If voltage is above 4.5 volts, check for a short in the signal wire to ground or to battery positive.
- 4Replace the fuel level sensor if the wiring checks out and voltage readings are still abnormal.
- 5If sensor replacement does not resolve the issue, check ECM for software updates or faults.
Common causes
- Faulty fuel level sensor
- Wiring issue or short circuit
- Corroded connector terminals
- Faulty ECM software
- Misreading due to tank deformation (like dents)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Yes, but you may not know how much fuel you have, which could lead to running out unexpectedly.
Will this problem come back after repair?
If wiring and connection issues are fixed and the new sensor is installed correctly, it should not return.
Why does this code sometimes pair with SPN 1525?
SPN 1525 indicates a signal below normal; they can occur together if there's an intermittent wiring issue.
Working a real vehicle right now?
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