Fuel Level Sensor B Circuit
What it means
P2065 means the PCM sees a circuit fault from the second fuel level sensor (sending unit "B") — an open, short, or out-of-range signal. Many tanks use two sending units, and this one reports the level over part of the tank. The usual effect is an unreliable fuel gauge; it doesn't affect how the engine runs, though it will trip the check-engine light.
Can I keep driving? Safe to drive; the main risk is an inaccurate fuel gauge, so don't rely on it — you could run low unexpectedly.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Inaccurate or erratic fuel-gauge reading
- Check-engine light on
- Possible affected EVAP monitor
Common causes
Most likely first
- Faulty fuel level sensor (sending unit) BLikely
- Open or shorted wiring in the sensor circuitCommon
- Poor or corroded electrical connectionCommon
- Faulty instrument cluster / combination meter (rare)Less often
How to diagnose & fix
Work through it in order
- Scan freeze-frame and confirm the code.
- Inspect the sending-unit wiring and connector (often at the fuel-pump module) for opens, shorts, or corrosion.
- Measure the sensor's resistance across the float range against spec.
- Replace the fuel level sensor / sending unit if faulty.
- Clear the code and re-test.
FAQ
Quick answers
Is it safe to drive with P2065?+
Can I just clear P2065?+
Related codes
Read & clear P2065 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.