P0192 — Fuel Rail Pressure Sensor Circuit Low Input
Drive with caution — fix soon.
What P0192 means
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.
Common symptoms
- Check engine light is on
- Hard starting or extended cranking
- Engine hesitation or stalling
- Reduced power or limp-mode operation
- Rough idle
Common causes
- Fuel rail pressure sensor shorted internally
- Signal wire shorted to ground
- Corroded or damaged sensor connector
- Genuinely low fuel pressure
- Faulty engine control module input circuit
Typical repair cost
$150 – $500
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0192 code?
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.
How much does it cost to fix a P0192 code?
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.
Is a P0192 code serious?
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.
Does low input mean the wiring is shorted?
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.