P0191

Fuel Rail Pressure Sensor Circuit Range/Performance

Severity: Medium Fuel & Air Metering Generic OBD-II Code Est. Repair: $100 - $350

Schedule diagnosis soon. Continued driving may worsen the issue.

Quick Answer

P0191 means “Fuel Rail Pressure Sensor Circuit Range/Performance.” Severity: Medium. Estimated repair cost: $100 - $350. Most common sign: CEL.

What Does P0191 Mean?

Fuel rail pressure sensor reading is implausible.

Common Symptoms

CEL
Possible hesitation or hard starting

Possible Causes

Faulty fuel rail pressure sensor
Wiring issue
Actual fuel delivery problem

How to Fix P0191 – Repair Guide

Verify actual fuel pressure with a gauge before replacing the sensor
Test sensor signal
Replace as needed
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Budgeting for This Repair?

A typical P0191 repair runs about $100 - $350. If you'd rather spread the cost over time, estimate the payment with our free sister tool: Car Finance Calculator (50-state sales tax, trade-in equity, full amortization).

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Disclaimer: Information is for educational reference only and does not replace professional diagnosis. Actual causes and costs vary by vehicle make, model, year and condition. Always verify with a qualified technician.