This code indicates that the powertrain control module has detected an intermittent signal from the low-pressure fuel system pressure sensor circuit. It typically points to a wiring, connector, or sensor reliability issue rather than a steady-state hard failure.
The sensor itself can produce an unstable internal signal as it ages or is exposed to fuel contamination, causing intermittent out-of-range readings.
Corroded, loose, or chafed wiring and terminals in the sensor circuit can cause the signal to drop out momentarily, especially with vibration or temperature change.
A shared ground or 5-volt reference circuit with intermittent connection can cause the sensor signal to become unstable without the sensor itself being failed.
A failing low-pressure fuel pump or restriction can cause real pressure swings that the sensor correctly reports, though this is less common than an electrical fault for an intermittent code.
An internal PCM driver or input failure is rare and should only be considered after the sensor, wiring, connectors, and actual fuel pressure have been verified.
No. This is almost always a sensor, wiring, or connector issue. PCM replacement for this code is rarely the correct fix and should only be a last resort after thorough circuit testing.
If there are no drivability symptoms, short-term driving is usually possible, but the underlying intermittent should be diagnosed because it can progress into a hard failure or no-start.
No. This refers to the low-pressure side, typically between the tank pump and the high-pressure pump. High-pressure system codes are separate and usually relate to direct injection rail pressure.
Not directly. Contaminated fuel can damage the pump or sensor over time, but the code itself is about an intermittent electrical signal from the low-pressure sensor circuit, not fuel quality.