P2540

DTC P2540, sometimes indicated as P254000 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the engine idling stability causing low pressure fuel system sensor circuit range/performance.

The low pressure fuel system sensor circuit range/performance fault code means that the PCM has detected a problem with the low pressure fuel system sensor. This could be due to a number of things, including a bad sensor, a wiring issue, or a problem with the fuel system itself.
If you have this fault code, the first thing you should do is check the sensor for damage and make sure that the wiring is properly connected. If the sensor is okay and the wiring is good, then the next step is to check the fuel system for any problems.
If you can't find any problems with the fuel system, then the next step is to reset the code and see if it comes back. If the code comes back, then you'll need to take the car to a mechanic to have it inspected and diagnosed.

• P2540: Pressure Fuel System Sensor Circuit Range/Performance
• P2540: Low Pressure Fuel System Sensor Circuit Range/Performance
• P2540: Fuel low pressure sensor – range/performance problem
• P2540 00: Fuel low pressure sensor - range/performance problem

These codes are commonly diagnosed with error code P2540.

• P0087 [1] Fuel Rail/System Pressure - Too Low
• P008B [1] Low Pressure Fuel System Pressure - Too High
• P008A [1] Low Pressure Fuel System Pressure - Too Low
• P129E [1] P129E
• P129F [1] P129F
• P310B [1] P310B