P0462 Code: Fuel Level Sensor Low — Causes & Fix
P0462 means the fuel level sensor signal is too low — the ECM reads an implausibly low fuel level.
- Applies to
- All OBD-II vehicles (any make or model)
- Est. repair cost
- $30 – $400
- Time to fix
- 30 minutes – 2 hours
What it means
Causes include a failed fuel-level sending unit, a short in its wiring, or a connector fault. P0462 is a generic OBD-II powertrain code defined in the SAE J2012 standard, so it applies to virtually any 1996-or-newer petrol car or light truck regardless of make. Fix the underlying fault, then clear the code with an OBD-II scan tool — it will return if the problem isn't resolved.
Symptoms
- Check engine light on
- Fuel gauge reading empty or erratic
- May affect EVAP monitoring
How to fix it
- 1
Check the sender wiring
1. Inspect the fuel-level sender connector and wiring for a short.
- 2
Replace the sending unit
1. Test the sender resistance across the float range. 2. Replace the sending unit (in the tank) if faulty, then clear the code.
Frequently asked questions
Why does the fuel gauge read empty with P0462?
A low sender signal reads as an empty tank. The sending unit or its wiring is usually the cause.
Last updated July 19, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.