P2541

Low Pressure Fuel System Sensor Circuit Low

Q: 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.

Q: 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.

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.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

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

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.

Read & clear P2541 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX