Sensor Voltage High - Tank Fuel Level
This code indicates the fuel level sensor voltage is above the normal 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 level sensor in the tank is sending a signal that suggests there's more fuel than there actually is. This could be due to a malfunctioning sensor or a wiring issue.
What the computer is actually seeing
The computer sees a voltage from the fuel level sensor that exceeds 4.5 volts, indicating a full tank when it shouldn't be. This voltage is measured in real-time to determine how much fuel is in the tank.
What a healthy reading looks like
Normal fuel level sensor voltage should range from 0.5 to 4.5 volts, with 0.5 volts indicating empty and 4.5 volts indicating full.
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. Visually inspect the fuel level sensor wiring and connectors for damage or corrosion. Decision: If damaged, repair or replace. If not, continue.
- 22. Disconnect the fuel level sensor connector and measure the voltage at the harness side with the ignition on. Decision: If voltage is greater than 4.5 volts, suspect a wiring issue; if within spec, suspect the sensor itself.
- 33. Reconnect the fuel level sensor and measure resistance across the sensor while moving the float arm (if applicable). Decision: If the resistance does not change, replace the sensor. If it does change, consider recalibrating.
Common causes
- Faulty fuel level sensor
- Shorted wiring or connections
- Corroded connectors
- Incorrect fuel level calibrations
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
Yes, the vehicle is drivable but you may not have an accurate reading of fuel levels.
Will this code come back after I clear it?
If the underlying issue isn't resolved, the code could return.
Why does this code show alongside other SPN codes?
It's common for multiple sensors to fail or exhibit issues at the same time in a fault scenario.
Working a real vehicle right now?
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