P2541
Low Pressure Fuel System Sensor Circuit Low
Fuel & air metering / low-pressure fuel
Generic OBD-II
Medium
What it means
P2541 means the low-pressure (supply) fuel-pressure sensor circuit is reading a voltage below the expected range. This sensor tells the ECM how much pressure the lift pump is delivering to the fuel system. A low reading usually points to a wiring short to ground or a failed sensor, though it can also reflect genuinely low supply pressure. The engine often still runs, but drivability can suffer.
Medium
Can I keep driving? Often still drivable, but the engine may hesitate, lose power, or start hard if the ECM stops trusting its fuel-pressure reading.
Common symptoms
What you'll notice
- Check-engine light on
- Hesitation or reduced power
- Hard starting in some cases
- Sometimes no noticeable symptom
Common causes
Most likely first
- Short to ground in the sensor signal wireLikely
- Failed low-pressure fuel-pressure sensor reading lowCommon
- Corroded or damaged sensor connectorCommon
- Genuinely low supply pressure (weak lift pump or clogged filter)Less often
- ECM reference-voltage issue (rare)Less often
How to diagnose & fix
Work through it in order
- Compare the fuel-pressure sensor's live data against a mechanical gauge.
- Inspect the signal wiring for a short to ground.
- Check the sensor connector for corrosion or damage.
- Verify actual low-pressure pump output and the fuel filter.
- Replace the sensor if it reads low while real pressure is normal.
FAQ
Quick answers
Is it safe to drive with P2541?+
Usually short-term, but if the sensor reading is wrong the engine can hesitate or start poorly. Confirm real fuel pressure before long trips.
Can I just clear P2541?+
It returns while the circuit still reads low. Check whether the sensor or the actual pressure is at fault first.
Related codes
Often seen with P2541
Read & clear P2541 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX