Drive with caution — fix soon.
This code means the fuel rail pressure sensor circuit is reading lower voltage than expected, often because the signal is shorted to ground or stuck low. Common causes include a failed sensor, a wiring short, or a bad connector, and occasionally genuinely low fuel pressure. A mechanic typically tests the circuit and compares actual fuel pressure before repairing the wiring or replacing the sensor.
$150 – $500
Varies by vehicle and root cause.
Short distances may be fine if the car runs normally, but stay cautious because it involves fuel pressure. If you notice stalling, hard starting, or power loss, avoid driving far and get it checked soon.
Most repairs run from $150 to $500. A sensor or wiring fix is on the lower end, while a fuel pressure problem from the pump or supply system can cost more.
It's moderately serious since it can affect how the engine runs and may put it into reduced-power mode. Many cases are just the sensor or wiring, but prompt diagnosis is still wise.
Low input often means the signal is shorted to ground or stuck low, but it can also be a failed sensor or even genuinely low fuel pressure. Testing is needed to pinpoint the cause.